about 2.25 miles southeast of Jefferson City (Ordovician to of the United States)

Where: Jefferson County, Tennessee (36.1° N, 83.5° W: paleocoordinates 29.8° S, 79.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chepultepec Formation, Skullrockian to Skullrockian (485.4 - 478.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: lithified 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 189363: authorized by Björn Kröger, entered by Björn Kröger on 13.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Endocerida - Cyrtendoceratidae
Ectenoceras millsi Ulrich et al. 1943