15 Specimen Results

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Phylum

Echinodermata (1)

Order

Fenestrida (10)

Spiraculata (1)

Class

Stenolaemata (10)

Family

Calymenidae (2)

Fenestellidae (10)

Pentremitidae (1)

Genus

Archimedes (10)

Flexicalymene (1)

Pentremites (1)

Individual/Organization

Sternberg, G.F. (12)

Miller, H.W. (2)

Zakrzewski, R.J. (1)

Period

Mississippian (11)

Pennsylvanian (1)

Formation

Mazon Creek (1)

Country

United States of America (15)

County