![Cycadeoidea from Texa, L. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5584-L15-1-300x200.jpg)
L15-1: Cycadeoidea from Texas, L. Cretaceous.
![Cycadeoidea from Utah, Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5587-L15-2-300x200.jpg)
L15-2: Cycadeoidea from Utah, Cretaceous.
![Cycadeoidea from the L. Cretaceous. Specimen polished, tangential section of stem.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5588-L15-3-300x200.jpg)
L15-3: Cycadeoidea from the L. Cretaceous. Specimen polished, tangential section of stem.
![Cycadeoidea, tangential section. Note ovulate receptacles with surrounding bract.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5592-L15-5-300x200.jpg)
L15-5: Cycadeoidea, tangential section. Note ovulate receptacles with surrounding bract.
![Cycadeoidea (l.s. of flowers) from N.A. L. Cretaceous. Note ovulate receptacle and surrounding bracts.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5594-L15-6-300x200.jpg)
L15-6: Cycadeoidea (l.s. of flowers) from N.A. L. Cretaceous. Note ovulate receptacle and surrounding bracts.
![Bucklandia indic a from Rajmahal Hills, India. U. Jurassic. Note the spirally arranged leaf bases.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5599-L15-9-300x200.jpg)
L15-9: ucklandia indica from Rajmahal Hills, India. U. Jurassic. Note the spirally arranged leaf bases.
![Williamsonia type flowers. Ovuliferous receptacles compressed and showing position of ovules. From Mexico. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5601-L15-10-300x200.jpg)
L15-10: Williamsonia type flowers.
Ovuliferous receptacles compressed and showing position of ovules. From Mexico. Age Jurassic.
![Williamsonia-type flowers. Ovuliferous receptacles compressed and showing position of ovules. From Mexico. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5603-L15-11-300x200.jpg)
L15-11: Williamsonia-type flowers.
Ovuliferous receptacles compressed and showing position of ovules. From Mexico. Age Jurassic.
![Williamsonia-type flowers. Ovuliferous receptacles compressed and showing position of ovules. From Mexico. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5605-L15-11-300x200.jpg)
L15-11: Williamsonia-type flowers.
Ovuliferous receptacles compressed and showing position of ovules. From Mexico. Age Jurassic.
![Ptilophyllum. From India. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5607-L15-12-300x200.jpg)
L15-12: Ptilophyllum.
From India. Age Jurassic.
![Ptilophyllum. From India. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5608-L15-12-300x200.jpg)
L15-12: Ptilophyllum.
From India. Age Jurassic.
![Ptilophyllum acutifolium. Leaf type of Williamsonia. From Rajmahal Hills, India. Age U.Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5609-L15-13-300x200.jpg)
L15-13: Ptilophyllum acutifolium.
Leaf type of Williamsonia. From Rajmahal Hills, India. Age U.Jurassic.
![Ptilophyllum(smaller) & Pterophyllum (larger). Leaf type associated with Williamsonia remains. From Rajmahal Hills, India. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5611-L15-14-300x200.jpg)
L15-14: Ptilophyllum(smaller) & Pterophyllum (larger).
Leaf type associated with Williamsonia remains. From Rajmahal Hills, India. Age U. Jurassic.
![Ptilophyllum(smaller) & Pterophyllum (larger). Leaf type associated with Williamsonia remains. From Rajmahal Hills, India. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5613-L15-14-300x200.jpg)
L15-14: Ptilophyllum(smaller) & Pterophyllum (larger).
Leaf type associated with Williamsonia remains. From Rajmahal Hills, India. Age U. Jurassic.
![Zamites type. Age Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5615-L15-15-300x200.jpg)
L15-15: Zamites type.
Age Cretaceous.
![Otozamites. Foliage of the Cycadeoid-type stem. From Mexico. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5616-L15-16-300x200.jpg)
L15-16: Otozamites.
Foliage of the Cycadeoid-type stem. From Mexico. Age Jurassic.
![Otozamites hespera. From Mexico. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5685-L15-45-300x200.jpg)
L15-45: Otozamites hespera.
From Mexico. Age Jurassic.
![Williamsonia recentior. From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5688-L15-46-300x200.jpg)
L15-46: Williamsonia recentior.
From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.
![Williamsonia recentior. From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5692-L15-47-300x200.jpg)
L15-47: Williamsonia recentior.
From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.
![Williamsonia recentior. From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5694-L15-48-300x200.jpg)
L15-48: Williamsonia recentior.
From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.
![Williamsonia recentior. From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5696-L15-49-300x200.jpg)
L15-49: Williamsonia recentior.
From Mill Creek, AB. Crowsnest Fm. Age L. Cretaceous.
![Cladophlebis sp. Specimen from drill core. From NW Territories. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5618-L15-17-300x200.jpg)
L15-17: Cladophlebis sp.
Specimen from drill core. From NW Territories. Age U. Jurassic.
![Cladophlebis sp. Specimen from drill core. From NW Territories. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5619-L15-17-300x200.jpg)
L15-17: Cladophlebis sp.
Specimen from drill core. From NW Territories. Age U. Jurassic.
![Pseudocycas. From Pin Creek, BC. Age LU. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5621-L15-18-300x200.jpg)
L15-18: Pseudocycas.
From Pin Creek, BC. Age LU. Cretaceous.
![Nilssonia. Nilssonia foliage, Equisetum ? Tubers and rhizoms. From Drumheller, AB. Age U.Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5623-L15-19-300x200.jpg)
L15-19: Nilssonia.
Nilssonia foliage, Equisetum ? Tubers and rhizoms. From Drumheller, AB. Age U.Cretaceous.
![Nilssonia. From Drumheller, AB. Age U.Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5626-L15-20-300x200.jpg)
L15-20: Nilssonia.
From Drumheller, AB. Age U.Cretaceous.
![Nilssonia. From Drumheller, AB. Age U.Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5630-L15-22-300x200.jpg)
L15-22: Nilssonia.
From Drumheller, AB. Age U.Cretaceous.
![Nilssonia. From Drumheller, AB. Age U.Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5633-L15-23-300x200.jpg)
L15-23: Nilssonia.
From Drumheller, AB. Age U.Cretaceous.
![Nilssonia](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5636-L15-24-300x200.jpg)
L15-24: Nilssonia
![Sphenobaiera-type foliage. From Pine River, B.C. Age LU.Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5639-L15-25-300x200.jpg)
L15-25: Sphenobaiera-type foliage.
From Pine River, B.C. Age LU.Cretaceous.
![Ginkgo leaves. From Horseshoe Canyon. Age U.Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5640-L15-26-300x200.jpg)
L15-26: Ginkgo leaves.
From Horseshoe Canyon. Age U.Cretaceous.
![Ginkgo sp. From Drumheller, AB. Horseshoe Canyon Formation. Age U.Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5645-L15-27-300x200.jpg)
L15-27: Ginkgo sp.
From Drumheller, AB. Horseshoe Canyon Formation. Age U.Cretaceous.
![Cyclocarya brownii + Gingko. Am.J.Bot. 1982 Manchester & Dilcher. Age U.Paleocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5648-L15-29-300x200.jpg)
L15-29: Cyclocarya brownii + Gingko.
Am.J.Bot. 1982 Manchester & Dilcher. Age U.Paleocene.
![Ginkgo sibirica. From Rosebury Topping, UK. Age Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5653-L15-30-300x200.jpg)
L15-30: Ginkgo sibirica.
From Rosebury Topping, UK. Age Jurassic.
![Ginkgo leaf. From N.Dakota. Age U.Paleocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5655-L15-31-300x200.jpg)
L15-31: Ginkgo leaf.
From N.Dakota. Age U.Paleocene.
![Ginkgo leaf. From N.Dakota. Age U.Paleocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5658-L15-32-300x200.jpg)
L15-32: Ginkgo leaf.
From N.Dakota. Age U.Paleocene.
![Ginkgo. From Smoky Tower, AB. Paskapoo Fm. Age Paleocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5660-L15-33-300x200.jpg)
L15-33: Ginkgo.
From Smoky Tower, AB. Paskapoo Fm. Age Paleocene.
![Ginkgo. From Republic, WA. Klonkike Mtn.Fm. Age Eocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5664-L15-35-300x200.jpg)
L15-35: Ginkgo.
From Republic, WA. Klonkike Mtn.Fm. Age Eocene.
![Ginkgoites sp. From Princeton, B.C. Allenby Fm. Age M.Eocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5666-L15-36-300x200.jpg)
L15-36: Ginkgoites sp.
From Princeton, B.C. Allenby Fm. Age M.Eocene.
![Ginkgoites sp. From Princeton, B.C. Allenby Fm. Age M.Eocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5668-L15-37-300x200.jpg)
L15-37: Ginkgoites sp.
From Princeton, B.C. Allenby Fm. Age M.Eocene.
![Ginkgo adiantoides. Partial leave. From Joffre Bridge. Age Paleocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5670-L15-38-300x200.jpg)
L15-38: Ginkgo adiantoides.
Partial leave. From Joffre Bridge. Age Paleocene.
![Ginkgo seed. From N.Dakota. Age U. Paleocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5672-L15-39-300x200.jpg)
L15-39: Ginkgo seed.
From N.Dakota. Age U. Paleocene.
![Ginkgo seed. From Drumheller, AB. Age U. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5674-L15-40-300x200.jpg)
L15-40: Ginkgo seed.
From Drumheller, AB. Age U. Cretaceous.
![Pentoxylon. Slide + specimen, note: 5 vascular segments and leaf traves. From India. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5678-L15-41-300x200.jpg)
L5-41: Pentoxylon.
Slide + specimen, note: 5 vascular segments and leaf traves. From India. Age U. Jurassic.
![Pentoxylon. From India. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5679-L15-42-300x200.jpg)
L5-42: Pentoxylon.
From India. Age U. Jurassic.
![Nipaniophyllum. From India. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5681-L15-43-300x200.jpg)
L15-43: Nipaniophyllum.
From India. Age U. Jurassic.
![Carnoconites. From India. Age U. Jurassic.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5683-L15-44-300x200.jpg)
L15-44: Carnoconites.
From India. Age U. Jurassic.
![Ginkgo. From McAbee site. Age M. Eocene.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5703-L15-51-300x200.jpg)
L15-51: Ginkgo.
From McAbee site. Age M. Eocene.
![Ginkgo leaves. From Drumheller, AB. Horseshoe Canyon Formation. Age U. Cretaceous.](https://grad.biology.ualberta.ca/paleobotany/wp-content/uploads/sites/57/2016/02/IMG_5707-L15-53-300x200.jpg)
L15-53: Ginkgo leaves.
From Drumheller, AB. Horseshoe Canyon Formation. Age U. Cretaceous.