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13 Specimen Results
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Order:
Trigonocarpales
County:
Grundy
Filter by
Phylum
Pteridophyta (13)
Family
Alethopteridaceae (5)
Medullosaceae (8)
Genus
Alethopteris (5)
Codonotheca (2)
Neuropteris (6)
Individual/Organization
Sternberg, G.F. (9)
Mrs. Danforth, F. (4)
Period
Pennsylvanian (13)
Formation
Mazon Creek (13)
Country
United States of America (13)
State/Province
Illinois (13)