Ulrich Loc. 4.5-5 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: Van Buren Member (Gasconade Formation), Tremadocian (485.4 - 477.7 Ma)

• Van Buren Formation in Ulrich et al. 1943.The Van Buren Formation (Bridge 1930) is now referred to in an interval sense with the Van Buren fauna comprising a zone in the lowerpart of the Gasconade Formation.

• member-level stratigraphic resolution

Environment/lithology: lithified chert and 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 189294: authorized by Björn Kröger, entered by Björn Kröger on 10.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ellesmerocerida - Ellesmeroceratidae
Burenoceras pumilum Ulrich et al. 1943
Dakeoceras subcurvatum Ulrich and Foerste 1931
Dakeoceras retrorsum Ulrich et al. 1943
Dakeoceras normale Ulrich and Foerste 1931