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4 Specimen Results
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Order:
Equisetales
Individual/Organization:
Mrs. Danforth, F.
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Phylum
Pteridophyta (4)
Family
Calamitaceae (4)
Genus
Annularia (4)
Period
Pennsylvanian (4)
Formation
Mazon Creek (4)
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United States of America (4)
State/Province
Illinois (4)
County
Grundy (4)