Four Mile Creek, near Oxford (Ordovician of the United States)

Also known as Four-Mile Creek

Where: Preble County, Ohio (39.5° N, 84.7° W: paleocoordinates 25.4° S, 58.1° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Saluda Formation, Richmondian (449.5 - 443.7 Ma)

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; dolomitic limestone

• "Hatfield (1968) described the Saluda Formation as being deposited under very shallow-water, possibly hypersaline, lagoonal conditions that developed behind an initially northward-advancing and then southward-retreating coral-sponge bank."
• Saluda Fm. general description: "sparsely fossiliferous dolomitic limestone and calcitic dolostone"

Size class: macrofossils

Preservation: cast

Collection methods: MU = Limper Museum of Geology at Miami University

Primary reference: R. C. Frey. 1995. Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati Arch region of Kentucky, Indiana, and Ohio. U.S. Geological Survey Professional Paper 1066P:1-126 [S. Holland/S. Holland]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88124: authorized by Björn Kröger, entered by Torsten Liebrecht on 01.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Actinocerida - Greenlandoceratidae
Richmondoceras brevicameratum Frey 1995
MU 399T (paratype)