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