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4 Specimen Results
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Order:
Trigonocarpales
Phylum:
Pteridophyta
Individual/Organization:
Mrs. Danforth, F.
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Family
Alethopteridaceae (2)
Medullosaceae (2)
Genus
Alethopteris (2)
Codonotheca (1)
Neuropteris (1)
Period
Pennsylvanian (4)
Formation
Mazon Creek (4)
Country
United States of America (4)
State/Province
Illinois (4)
County
Grundy (4)