L13-1: Lyginopteris oldhamia from England U. Carboniferous.
x.s.

L13-11: Lyginopteris oldhamia from England. U. Carboniferous. Peel of stem l.s.

L13-12: Lyginorachis x.s. from England, U. Carboniferous. Peel.

L13-15: Lagenostoma ovoides from England, U. Carboniferous. Slide l.s. of seed.

L13-16: Lagenostoma ovoides from England, U. Carboniferous. slide.

L13-17: Calymmatotheca-like cupules with associated seeds from Lingan Mine Dump, Cape Breton.

L13-18: Crossotheca, from Mazon Creek. Pennsylvanian.

L13-23: Heterangium grievii x.s. from Pettycur, Scotland. L. Carboniferous. Slide.

L13-28: Callistophyton boysettii, shoing roots in x.s. Peel.

L13-29: Callistophyton poroxyloides from Berryville, IL. Peel.

L13-31: Idanothekion from Berryville. IL. Peel.

L13-33: Callospermarion x.s. of seed. Peel.

L13-35: Medullosa noei stem.

L13-36: Medullosa noie x.s. of stem with 2 “steles”. Peel.

L13-38: Medullosa thompsonii x.s. of stem. Peel.

L13-40: Medullosa noei x.s. of stem with 3 steles. Peel.

L13-49: Alethopteris from Calhoun, IL. Peel.

L13-50: Myeloxylon x.s. of petiole of Medullosa. Peel.

L13-52: Myeloxylon x.s. from Kansas.

L13-56: Trigonocarpus from Alabama, Pennylvanian.

L13-59: Trigonocarpus Alabama, Pennsylvanian.

L13-70: Pachytesta illinoensis x.s. from N.A. U. pennsylvanian. Peel.

L13-73: Pachytesta gigantea.

L13-81: Dolerotheca fromosa from Berryville, IL. U. Pennsylvanian.

L13-84: Alethopteris x.s. Peel, showing pinnules and pinna. Age U.Pennsylvanian.

L13-88: Codonotheca (crushed).
Specimen showing monolete spores in the sporangia. From N.A. Age U.Pennsylvanian.

L13-93: Whittleseya.
From Alabama. Age Pennsylvanian.

L13-98: Whittleseya

L13-103: Medullosa leuckartii x.s. Peel, note 4 peripheral “steles”. From France. Age Permian.

L13-109: Glossopteris.
From Maloney’s Q, Australia. Age Upper Permian.

L13-111: Glossopteris.
From Maloney’s Q, Australia. Age U.Permian.

L13-120: Glossopteris.
From Nott’s Q, N.S.W. Australia. Age Triassic.

L13-127: Glossopteris.
From India. Age U.Permian.

L13-129: Glossopteris.
From Pubbo, N.S.W. Australia. Age U.Permian.

L13-104: Caytonia

L13-107: Caytonanthus
From Cayton Bay. Age Jurassic.