9 Specimen Results

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Phylum

Pteridophyta (9)

Family

Alethopteridaceae (3)

Medullosaceae (6)

Genus

Alethopteris (3)

Codonotheca (1)

Neuropteris (5)

Period

Pennsylvanian (9)

Formation

Mazon Creek (9)

Country

United States of America (9)

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County