6 miles west of Ava (Ordovician to of the United States)

Where: Douglas County, Missouri (37.0° N, 92.7° W: paleocoordinates 23.0° S, 81.0° W)

• coordinate based on nearby landmark

When: Jefferson City Formation, Tulean to Tulean (485.4 - 471.8 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Preservation: cast, original aragonite, replaced with calcite

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 189374: authorized by Björn Kröger, entered by Björn Kröger on 13.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Endocerida - Proterocameroceratidae
Mcqueenoceras jeffersonense Ulrich and Foerste 1936