along Little Indian Creek, about 10.5 miles south of St. Clair (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 189358: authorized by Björn Kröger, entered by Björn Kröger on 13.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
Levisoceras instabile Ulrich et al. 1943
Dakeoceras reversum Ulrich et al. 1943
Oneotoceras percurvatum Ulrich et al. 1943
Ectenoceras compressum Ulrich et al. 1943
Ectenoceras laqueatum Ulrich et al. 1943