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County:
Grundy
Family:
Alethopteridaceae
Filter by
Phylum
Pteridophyta (5)
Order
Trigonocarpales (5)
Genus
Alethopteris (5)
Individual/Organization
Sternberg, G.F. (3)
Mrs. Danforth, F. (2)
Period
Pennsylvanian (5)
Formation
Mazon Creek (5)
Country
United States of America (5)
State/Province
Illinois (5)