User Options
Toggle navigation
Login
Register
Login
Register
Main Site
Browse
Advanced Search
Featured
About
66 Specimen Results
Add all results to lightbox
Select results to add to lightbox
Sort by:
Title
Sort order:
Ascending
Descending
Download results as:
Checklist
PDF (thumbnails)
Specimen information (Excel)
Add selected results to lightbox
Phylum:
Pteridophyta
Filter by
Order
Coenopteridales (16)
Equisetales (10)
Gleicheniales (8)
Marattiales (14)
Osmundales (1)
Schizaeales (2)
Trigonocarpales (15)
Family
Alethopteridaceae (6)
Asterophyllites (1)
Calamitaceae (10)
Cynepteridaceae (2)
Gleicheniaceae (1)
Marattiaceae (14)
Matoniaceae (7)
Medullosaceae (9)
Osmundaceae (1)
Zygopteridaceae (16)
and 3 more
Genus
Alethopteris (6)
Alloiopteris (16)
Annularia (8)
Calamites (1)
Codonotheca (2)
Cynepteris (2)
Laccopteris (7)
Neuropteris (7)
Pecopteris (14)
Todites (1)
Wingatea (1)
and 4 more
has media
Has media (1)
Has no media (65)
Individual/Organization
Sternberg, G.F. (17)
Walker, M.V. (8)
Gnidovec, D.M. (16)
Hamm, S.A. (1)
Elias, M.K. (3)
Mrs. Danforth, F. (17)
Ash, S.R. (4)
Period
Pennsylvanian (51)
Triassic (11)
Epoch
Late (4)
Formation
Altamont (1)
Chinle (7)
Lawrence (2)
Mazon Creek (35)
Stranger (1)
Member
Lake Neosha (1)
Country
United States of America (61)
State/Province
Arizona (7)
Illinois (34)
Kansas (20)
County
Douglas (2)
Grundy (34)
Linn (1)
Montgomery (1)
Navajo (7)
Wabaunsee (16)