5 miles S of Potosi (Ordovician of the United States)

Where: Shannon County, Missouri (37.3° N, 91.0° W: paleocoordinates 23.9° S, 81.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• formation-level stratigraphic resolution

Environment/lithology: lithified dolomite and chert

• large amounts of chert in which extensive molluscan fauna is represented

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 189394: authorized by Björn Kröger, entered by Björn Kröger on 16.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
Oneotoceras percurvatum
Oneotoceras percurvatum Ulrich et al. 1943