Richmond Group Cephalopods, Indiana and Ohio (Ordovician of the United States)

Where: Indiana, Ohio (40.0° N, 85.3° W: paleocoordinates 24.7° S, 58.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Richmond Group, Ashgillian (449.5 - 443.7 Ma)

• Richmondian

Environment/lithology:

Size class: macrofossils

Primary reference: A. K. Miller, W. Youngquist, and C. Collinson. 1954. Ordovician cephalopod fauna of Baffin Island. Geological Society of America Memoir 62:1-234 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24171: authorized by Steven Holland, entered by Tori Hanson on 01.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Orthocerida - Clinoceratidae
? Whitfieldoceras sp. Foerste 1932
 Discosorida - Westonoceratidae
Westonoceras sp. Foerste 1924
 Barrandeocerida - Apsidoceratidae
Charactoceras sp. Foerste 1924
 Ascocerida - Probillingsitidae
Probillingsites sp. Foerste 1928
 Endocerida - Endoceratidae
Endoceras sp. Hall 1847
 Actinocerida - Gonioceratidae
Lambeoceras sp. Foerste 1917
 Actinocerida - Ormoceratidae
Ormoceras sp. Stokes 1840
 Pseudorthocerida - Spyroceratidae
Spyroceras sp. Hyatt 1884
 Oncocerida - Diestoceratidae
Diestoceras sp. Foerste 1924