above entrance of Little Indian Creek into the Meramec River (Ordovician of the United States)

Also known as about 10.5 miles SW of Saint Clair

Where: Franklin County, Missouri (38.3° N, 91.0° W: paleocoordinates 23.5° S, 80.6° W)

• coordinate based on nearby landmark

When: Gasconade Dolomite Formation, Tremadocian (485.4 - 477.7 Ma)

• formation-level stratigraphic resolution

Environment/lithology: dolomite

Size classes: macrofossils, mesofossils

Preservation: recrystallized, original aragonite

Primary reference: E. O. Ulrich, A. F. Foerste, and A.K. Miller. 1943. Ozarkian and Canadian cephalopods. Part II, Brevicones. Geological Society of America Special Papers 49:1-240 [P. Wagner/P. Wagner/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 189337: authorized by Björn Kröger, entered by Björn Kröger on 12.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
Clarkoceras inconstans Ulrich et al. 1943
Dakeoceras reversum Ulrich et al. 1943