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35 Specimen Results
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County:
Grundy
Phylum:
Pteridophyta
Filter by
Order
Equisetales (9)
Marattiales (13)
Trigonocarpales (13)
Family
Alethopteridaceae (5)
Calamitaceae (9)
Marattiaceae (13)
Medullosaceae (8)
Genus
Alethopteris (5)
Annularia (9)
Codonotheca (2)
Neuropteris (6)
Pecopteris (13)
Individual/Organization
Sternberg, G.F. (18)
Mrs. Danforth, F. (17)
Period
Pennsylvanian (35)
Formation
Mazon Creek (36)
Country
United States of America (35)
State/Province
Illinois (35)