{"id":62,"date":"2016-02-28T19:53:12","date_gmt":"2016-02-29T02:53:12","guid":{"rendered":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/?page_id=62"},"modified":"2020-05-13T20:50:43","modified_gmt":"2020-05-14T02:50:43","slug":"lab-06-introduction-to-ferns-marattiales-ophioglossales-paleozoic-filicales","status":"publish","type":"page","link":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/?page_id=62","title":{"rendered":"Lab 06 Introduction to ferns, Marattiales, Ophioglossales, Paleozoic filicales"},"content":{"rendered":"<div id=\"attachment_527\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4651.jpg\" rel=\"attachment wp-att-527\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-527\" class=\"size-medium wp-image-527\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4651-300x200.jpg\" alt=\"Gillespiea randolphensis from Randolph County, W. Virginia. Age Famennian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4651-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4651-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4651-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4651-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-527\" class=\"wp-caption-text\">L9-1: Gillespiea randolphensis from Randolph County, W. Virginia. Age Famennian.<\/p><\/div>\n<div id=\"attachment_526\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4652-L9-2.jpg\" rel=\"attachment wp-att-526\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-526\" class=\"size-medium wp-image-526\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4652-L9-2-300x200.jpg\" alt=\"Peel of Stauropteris\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4652-L9-2-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4652-L9-2-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4652-L9-2-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4652-L9-2-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-526\" class=\"wp-caption-text\">L9-2: Peel of Stauropteris<\/p><\/div>\n<div id=\"attachment_525\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4653-L9-3.jpg\" rel=\"attachment wp-att-525\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-525\" class=\"size-medium wp-image-525\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4653-L9-3-300x200.jpg\" alt=\"Megasporangium l.s. of Stauropteris burntislandica from Pettycure, England. Age Mississippian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4653-L9-3-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4653-L9-3-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4653-L9-3-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4653-L9-3-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-525\" class=\"wp-caption-text\">L9-3: Megasporangium l.s. of Stauropteris burntislandica from Pettycure, England. Age Mississippian.<\/p><\/div>\n<div id=\"attachment_524\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4654-L9-4.jpg\" rel=\"attachment wp-att-524\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-524\" class=\"size-medium wp-image-524\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4654-L9-4-300x200.jpg\" alt=\"Peel of cross section of Zygopteris ilinoiense from Berryville. Age Upper Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4654-L9-4-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4654-L9-4-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4654-L9-4-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4654-L9-4-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-524\" class=\"wp-caption-text\">L9-4: Peel of cross section of Zygopteris ilinoiense from Berryville. Age Upper Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_523\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4656-L9-5.jpg\" rel=\"attachment wp-att-523\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-523\" class=\"size-medium wp-image-523\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4656-L9-5-300x200.jpg\" alt=\"Peel of Elapteris scotti X.S. from Lewis Creek, Kentucky. Age M. Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4656-L9-5-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4656-L9-5-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4656-L9-5-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4656-L9-5-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-523\" class=\"wp-caption-text\">L9-5: Peel of Elapteris scotti X.S. from Lewis Creek, Kentucky. Age M. Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_522\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4660-L9-6.jpg\" rel=\"attachment wp-att-522\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-522\" class=\"size-medium wp-image-522\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4660-L9-6-300x200.jpg\" alt=\"Peel of Etapteris leclerqii from Lewis Creek, Kentucky.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4660-L9-6-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4660-L9-6-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4660-L9-6-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4660-L9-6-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-522\" class=\"wp-caption-text\">L9-6: Peel of Etapteris leclerqii from Lewis Creek, Kentucky.<\/p><\/div>\n<div id=\"attachment_521\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4664-L9-7.jpg\" rel=\"attachment wp-att-521\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-521\" class=\"size-medium wp-image-521\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4664-L9-7-300x200.jpg\" alt=\"Peel of Etapteris x.s. petiole from Sahara #6 Mine, Illinois. Age L. Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4664-L9-7-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4664-L9-7-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4664-L9-7-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4664-L9-7-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-521\" class=\"wp-caption-text\">L9-7: Peel of Etapteris x.s. petiole from Sahara #6 Mine, Illinois. Age L. Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_520\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4669.jpg\" rel=\"attachment wp-att-520\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-520\" class=\"size-medium wp-image-520\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4669-300x200.jpg\" alt=\"Biscalitheca (fertile-sporangia) from Berryville. Age Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4669-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4669-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4669-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4669-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-520\" class=\"wp-caption-text\">L9-9: Biscalitheca (fertile-sporangia) from Berryville. Age Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_519\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4674-L9-13.jpg\" rel=\"attachment wp-att-519\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-519\" class=\"size-medium wp-image-519\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4674-L9-13-300x200.jpg\" alt=\"Rhacophyton, Zygopterid fern. Age Devonian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4674-L9-13-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4674-L9-13-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4674-L9-13-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4674-L9-13-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-519\" class=\"wp-caption-text\">L9-13: Rhacophyton, Zygopterid fern. Age Devonian.<\/p><\/div>\n<div id=\"attachment_518\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4678-L9-15.jpg\" rel=\"attachment wp-att-518\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-518\" class=\"size-medium wp-image-518\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4678-L9-15-300x200.jpg\" alt=\"Rhacophyton, Zygopterid fern. Age Devonian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4678-L9-15-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4678-L9-15-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4678-L9-15-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4678-L9-15-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-518\" class=\"wp-caption-text\">L9-15: Rhacophyton, Zygopterid fern. Age Devonian.<\/p><\/div>\n<div id=\"attachment_517\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4683.jpg\" rel=\"attachment wp-att-517\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-517\" class=\"size-medium wp-image-517\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4683-300x200.jpg\" alt=\"Rhacophyton, Zygopterid fern. Age Devonian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4683-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4683-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4683-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4683-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-517\" class=\"wp-caption-text\">L9-16: Rhacophyton, Zygopterid fern. Age Devonian.<\/p><\/div>\n<div id=\"attachment_516\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4684-L9-19.jpg\" rel=\"attachment wp-att-516\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-516\" class=\"size-medium wp-image-516\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4684-L9-19-300x200.jpg\" alt=\"Metaclepsydropsis duplex is a Mississippian species with horizontal rhizome.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4684-L9-19-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4684-L9-19-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4684-L9-19-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4684-L9-19-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-516\" class=\"wp-caption-text\">L9-19: Metaclepsydropsis duplex is a Mississippian species with horizontal rhizome.<\/p><\/div>\n<div id=\"attachment_515\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4685-L9-20.jpg\" rel=\"attachment wp-att-515\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-515\" class=\"size-medium wp-image-515\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4685-L9-20-300x200.jpg\" alt=\"Metaclepsydropsis duplex is a Mississippian species with horizontal rhizome.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4685-L9-20-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4685-L9-20-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4685-L9-20-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4685-L9-20-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-515\" class=\"wp-caption-text\">L9-20: Metaclepsydropsis duplex is a Mississippian species with horizontal rhizome.<\/p><\/div>\n<div id=\"attachment_528\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4687.jpg\" rel=\"attachment wp-att-528\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-528\" class=\"size-medium wp-image-528\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4687-300x200.jpg\" alt=\"Peel of cross section of base of Psaronius blickei from Berryville, Illinois. Age U. Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4687-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4687-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4687-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4687-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-528\" class=\"wp-caption-text\">L10-1: Peel of cross section of base of Psaronius blickei from Berryville, Illinois. Age U. Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_529\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4695.jpg\" rel=\"attachment wp-att-529\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-529\" class=\"size-medium wp-image-529\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4695-300x200.jpg\" alt=\"Psaronius melanedrus x.s. from West Mineral. Age m. Pennsylvanian. Showing stem with adventitious root mantle.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4695-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4695-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4695-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4695-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-529\" class=\"wp-caption-text\">L10-2: Psaronius melanedrus x.s. from West Mineral. Age m. Pennsylvanian. Showing stem with adventitious root mantle.<\/p><\/div>\n<div id=\"attachment_530\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4709.jpg\" rel=\"attachment wp-att-530\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-530\" class=\"size-medium wp-image-530\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4709-300x200.jpg\" alt=\"Coal ball with Psaronius melanedrus from Illinois. Age U. Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4709-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4709-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4709-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4709-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-530\" class=\"wp-caption-text\">L10-4: Coal ball with Psaronius melanedrus from Illinois. Age U. Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_531\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4711.jpg\" rel=\"attachment wp-att-531\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-531\" class=\"size-medium wp-image-531\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4711-300x200.jpg\" alt=\"Peel of coal ball with Psaronius melanedrus from Illinois. Age U. Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4711-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4711-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4711-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4711-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-531\" class=\"wp-caption-text\">L10-4: Peel of coal ball with Psaronius melanedrus from Illinois. Age U. Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_532\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4713.jpg\" rel=\"attachment wp-att-532\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-532\" class=\"size-medium wp-image-532\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4713-300x200.jpg\" alt=\"Coal ball of Psaronius blicklei from Berryville, Illinnois. Age U. Pennsylcanian. Permineralized.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4713-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4713-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4713-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4713-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-532\" class=\"wp-caption-text\">L10-5: Coal ball of Psaronius blicklei from Berryville, Illinnois. Age U. Pennsylcanian. Permineralized.<\/p><\/div>\n<div id=\"attachment_533\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4715.jpg\" rel=\"attachment wp-att-533\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-533\" class=\"size-medium wp-image-533\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4715-300x200.jpg\" alt=\"Peel of coal ball of Psaronius blicklei from Berryville, Illinnois. Age U. Pennsylcanian. Permineralized.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4715-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4715-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4715-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4715-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-533\" class=\"wp-caption-text\">L10-5: Peel of coal ball of Psaronius blicklei from Berryville, Illinnois. Age U. Pennsylcanian. Permineralized.<\/p><\/div>\n<div id=\"attachment_534\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4717.jpg\" rel=\"attachment wp-att-534\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-534\" class=\"size-medium wp-image-534\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4717-300x200.jpg\" alt=\"Cross section of Psaronius roots of root mantle.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4717-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4717-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4717-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4717-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-534\" class=\"wp-caption-text\">L10-6: Cross section of Psaronius roots of root mantle.<\/p><\/div>\n<div id=\"attachment_535\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4719.jpg\" rel=\"attachment wp-att-535\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-535\" class=\"size-medium wp-image-535\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4719-300x200.jpg\" alt=\"Psaronius stem x.s.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4719-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4719-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4719-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4719-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-535\" class=\"wp-caption-text\">L10-8: Psaronius stem x.s.<\/p><\/div>\n<div id=\"attachment_536\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4720.jpg\" rel=\"attachment wp-att-536\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-536\" class=\"size-medium wp-image-536\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4720-300x200.jpg\" alt=\"Peel of Psaronius stem.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4720-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4720-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4720-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4720-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-536\" class=\"wp-caption-text\">L10-8: Peel of Psaronius stem.<\/p><\/div>\n<div id=\"attachment_537\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4729.jpg\" rel=\"attachment wp-att-537\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-537\" class=\"size-medium wp-image-537\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4729-300x200.jpg\" alt=\"Peel of Psaronius stem.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4729-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4729-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4729-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4729-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-537\" class=\"wp-caption-text\">L10-8: Peel of Psaronius stem.<\/p><\/div>\n<div id=\"attachment_538\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4739-L10-10.jpg\" rel=\"attachment wp-att-538\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-538\" class=\"size-medium wp-image-538\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4739-L10-10-300x200.jpg\" alt=\"Peel of Psaronius stem x.s. \" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4739-L10-10-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4739-L10-10-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4739-L10-10-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4739-L10-10-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-538\" class=\"wp-caption-text\">L10-9: Peel of Psaronius stem x.s.<\/p><\/div>\n<div id=\"attachment_539\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4749-L10-11.jpg\" rel=\"attachment wp-att-539\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-539\" class=\"size-medium wp-image-539\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4749-L10-11-300x200.jpg\" alt=\"Peel of Psaronius stem x.s. from Shade Creek, Ohio. Age Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4749-L10-11-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4749-L10-11-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4749-L10-11-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4749-L10-11-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-539\" class=\"wp-caption-text\">L10-11: Peel of Psaronius stem x.s. from Shade Creek, Ohio. Age Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_540\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4754-L10-12.jpg\" rel=\"attachment wp-att-540\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-540\" class=\"size-medium wp-image-540\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4754-L10-12-300x200.jpg\" alt=\"Peel of Psaronius blickei x.s. from Berryville, Illinois. U. Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4754-L10-12-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4754-L10-12-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4754-L10-12-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4754-L10-12-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-540\" class=\"wp-caption-text\">L10-12: Peel of Psaronius blickei x.s. from Berryville, Illinois. U. Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_541\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4773.jpg\" rel=\"attachment wp-att-541\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-541\" class=\"size-medium wp-image-541\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4773-300x200.jpg\" alt=\"Peel of Psaronius roots x.s. from Harrisburge, Illinois.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4773-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4773-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4773-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4773-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-541\" class=\"wp-caption-text\">L10-14: Peel of Psaronius roots x.s. from Harrisburge, Illinois.<\/p><\/div>\n<div id=\"attachment_542\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4780-L10-15.jpg\" rel=\"attachment wp-att-542\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-542\" class=\"size-medium wp-image-542\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4780-L10-15-300x200.jpg\" alt=\"Peel of Psaronius root (cut)\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4780-L10-15-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4780-L10-15-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4780-L10-15-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4780-L10-15-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-542\" class=\"wp-caption-text\">L10-15: Peel of Psaronius root (cut)<\/p><\/div>\n<div id=\"attachment_543\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4781.jpg\" rel=\"attachment wp-att-543\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-543\" class=\"size-medium wp-image-543\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4781-300x200.jpg\" alt=\"Permineralized root of Psaronius.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4781-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4781-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4781-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4781-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-543\" class=\"wp-caption-text\">Permineralized root of Psaronius.<\/p><\/div>\n<div id=\"attachment_545\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4786.jpg\" rel=\"attachment wp-att-545\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-545\" class=\"size-medium wp-image-545\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4786-300x200.jpg\" alt=\"Peel of Stipitopteris from Berryville. Illinois. Age U. Pennsylvanina.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4786-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4786-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4786-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4786-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-545\" class=\"wp-caption-text\">L10-16: Peel of Stipitopteris from Berryville. Illinois. Age U. Pennsylvanina.<\/p><\/div>\n<div id=\"attachment_546\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4788-L10-17.jpg\" rel=\"attachment wp-att-546\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-546\" class=\"size-medium wp-image-546\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4788-L10-17-300x200.jpg\" alt=\"Peel of Psaronius melanedrus from Sahara, Illinois. M.Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4788-L10-17-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4788-L10-17-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4788-L10-17-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4788-L10-17-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-546\" class=\"wp-caption-text\">\u00a0L10-17: Peel of Psaronius melanedrus from Sahara, Illinois. M.Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_547\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4791-L10-18.jpg\" rel=\"attachment wp-att-547\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-547\" class=\"size-medium wp-image-547\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4791-L10-18-300x200.jpg\" alt=\"Pecopteris from Mazon creek, Illinois. Age Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4791-L10-18-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4791-L10-18-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4791-L10-18-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4791-L10-18-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-547\" class=\"wp-caption-text\">L10-18: Pecopteris from Mazon creek, Illinois. Age Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_548\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4795-L10-20.jpg\" rel=\"attachment wp-att-548\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-548\" class=\"size-medium wp-image-548\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4795-L10-20-300x200.jpg\" alt=\"Pecopteris from Mazon Creek, Illinois. Age Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4795-L10-20-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4795-L10-20-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4795-L10-20-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4795-L10-20-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-548\" class=\"wp-caption-text\">L10-19: Pecopteris from Mazon Creek, Illinois. Age Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_549\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4800-L10-22.jpg\" rel=\"attachment wp-att-549\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-549\" class=\"size-medium wp-image-549\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4800-L10-22-300x200.jpg\" alt=\"Pecopteris from Mazon Creek, Illinois. Age Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4800-L10-22-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4800-L10-22-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4800-L10-22-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4800-L10-22-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-549\" class=\"wp-caption-text\">L10-20: Pecopteris from Mazon Creek, Illinois. Age Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_550\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4803-L10-23.jpg\" rel=\"attachment wp-att-550\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-550\" class=\"size-medium wp-image-550\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4803-L10-23-300x200.jpg\" alt=\"Pecopteris arborescens from Mason Creek, Illinois. U. Pennsylvanian.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4803-L10-23-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4803-L10-23-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4803-L10-23-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4803-L10-23-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-550\" class=\"wp-caption-text\">L10-23: Pecopteris arborescens from Mason Creek, Illinois. U. Pennsylvanian.<\/p><\/div>\n<div id=\"attachment_551\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4810-L10-26.jpg\" rel=\"attachment wp-att-551\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-551\" class=\"size-medium wp-image-551\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4810-L10-26-300x200.jpg\" alt=\"Pecopteris unitus\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4810-L10-26-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4810-L10-26-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4810-L10-26-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4810-L10-26-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-551\" class=\"wp-caption-text\">L10-26: Pecopteris unitus<\/p><\/div>\n<div id=\"attachment_552\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4813.jpg\" rel=\"attachment wp-att-552\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-552\" class=\"size-medium wp-image-552\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4813-300x200.jpg\" alt=\"Pecopteris with lobed pinnule from Knoxville, Tennesee\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4813-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4813-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4813-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4813-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-552\" class=\"wp-caption-text\">L10-27: Pecopteris with lobed pinnule from Knoxville, Tennesee<\/p><\/div>\n<div id=\"attachment_553\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4820-L10-30.jpg\" rel=\"attachment wp-att-553\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-553\" class=\"size-medium wp-image-553\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4820-L10-30-300x200.jpg\" alt=\"Pecopteris a fertile specimen.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4820-L10-30-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4820-L10-30-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4820-L10-30-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4820-L10-30-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-553\" class=\"wp-caption-text\">L10-30: Pecopteris a fertile specimen.<\/p><\/div>\n<div id=\"attachment_554\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4822-L10-31.jpg\" rel=\"attachment wp-att-554\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-554\" class=\"size-medium wp-image-554\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4822-L10-31-300x200.jpg\" alt=\"Peel of Scolecopteris x.s. of synangia. \" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4822-L10-31-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4822-L10-31-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4822-L10-31-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4822-L10-31-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-554\" class=\"wp-caption-text\">L10-31: Peel of Scolecopteris x.s. of synangia.<\/p><\/div>\n<div id=\"attachment_555\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4835.jpg\" rel=\"attachment wp-att-555\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-555\" class=\"size-medium wp-image-555\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4835-300x200.jpg\" alt=\"Botrychium wightonii from Genesee, AB. Scollard Fm. L. Paleocene.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4835-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4835-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4835-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4835-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-555\" class=\"wp-caption-text\">L10-34: Botrychium wightonii from Genesee, AB. Scollard Fm. L. Paleocene.<\/p><\/div>\n<div id=\"attachment_556\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4859.jpg\" rel=\"attachment wp-att-556\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-556\" class=\"size-medium wp-image-556\" src=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4859-300x200.jpg\" alt=\"Extant fern leaf with synangia.\" width=\"300\" height=\"200\" srcset=\"https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4859-300x200.jpg 300w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4859-768x512.jpg 768w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4859-1024x683.jpg 1024w, https:\/\/grad.biology.ualberta.ca\/paleobotany\/wp-content\/uploads\/sites\/57\/2015\/12\/IMG_4859-624x416.jpg 624w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-556\" class=\"wp-caption-text\">Extant fern leaf with synangia along the edge of the leaf.<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1614,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-62","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=\/wp\/v2\/pages\/62","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=\/wp\/v2\/users\/1614"}],"replies":[{"embeddable":true,"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=62"}],"version-history":[{"count":8,"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=\/wp\/v2\/pages\/62\/revisions"}],"predecessor-version":[{"id":1481,"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=\/wp\/v2\/pages\/62\/revisions\/1481"}],"wp:attachment":[{"href":"https:\/\/grad.biology.ualberta.ca\/paleobotany\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=62"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}