on the South fork of Clearwater River (Ordovician of Canada)

Where: Alberta, Canada (51.9° N, 115.9° W: paleocoordinates 2.8° S, 72.6° W)

• outcrop-level geographic resolution

When: Mons Formation, Tremadocian (485.4 - 477.7 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

Collection methods: peel or thin section,

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 189399: authorized by Björn Kröger, entered by Björn Kröger on 16.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ellesmerocerida - Ellesmeroceratidae
Clarkoceras sp. Ruedemann 1905