upper Warsaw Formation, Illinois-Iowa-Missouri (Carboniferous of the United States)

Where: Iowa (40.0° N, 91.0° W: paleocoordinates 13.6° S, 35.0° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Warsaw Formation, Meramecian (345.0 - 336.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Preservation: original calcite

Primary reference: W. I. Ausich and T. W. Kammer. 1991. Late Osagean and Meramecian Actinocrinites (Echinodermata: Crinoidea) from the Mississippian stratotype region. Journal of Paleontology 65(3):485-499 [S. Holland/S. Holland/S. Holland]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 37841: authorized by Steven Holland, entered by Steven Holland on 25.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
 Monobathrida - Actinocrinitidae