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39 Specimen Results
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State/Province:
Illinois
Individual/Organization:
Sternberg, G.F.
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Phylum
Bryozoa (12)
Cnidaria (1)
Echinodermata (6)
Lycophyta (1)
Pteridophyta (18)
Order
Equisetales (5)
Fenestrida (12)
Lepidodendrales (1)
Marattiales (4)
Spiraculata (6)
Trigonocarpales (9)
Class
Anthozoa (1)
Blastoidea (6)
Stenolaemata (12)
Family
Alethopteridaceae (3)
Calamitaceae (5)
Fenestellidae (12)
Lepidodendraceae (1)
Marattiaceae (4)
Medullosaceae (6)
Pentremitidae (6)
Genus
Alethopteris (3)
Annularia (5)
Archimedes (12)
Codonotheca (1)
Lepidodendron (1)
Neuropteris (5)
Pecopteris (4)
Pentremites (6)
and 1 more
has media
Has media (12)
Has no media (27)
Individual/Organization
Bures, J. (1)
Period
Cretaceous (1)
Mississippian (18)
Pennsylvanian (18)
Formation
Mazon Creek (20)
Warsaw (18)
Country
United States of America (39)
County
Grundy (20)
Monroe (19)