Where: Iowa (40.0° N, 91.0° W: paleocoordinates 18.1° S, 35.9° W)
• coordinate estimated from map
• basin-level geographic resolution
When: Keokuk Limestone Formation, Osagean (352.0 - 343.0 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 37839: authorized by Steven Holland, entered by Steven Holland on 25.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Crinoidea | |
Actinocrinites probolos, Actinocrinites lowei, Actinocrinites pernodosus, Actinocrinites jugosus, Actinocrinites gibsoni
Actinocrinites lowei Sea lily
Actinocrinites pernodosus Sea lily
Actinocrinites jugosus Sea lily
Actinocrinites gibsoni Sea lily |