1/2 mile NW of Washburn Station (Ordovician to of the United States)

Where: Grainger County, Tennessee (36.3° N, 83.6° W: paleocoordinates 29.6° S, 79.6° W)

• coordinate estimated from map

• local area-level geographic resolution

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

• formation-level stratigraphic resolution

Environment/lithology: 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 189308: authorized by Björn Kröger, entered by Björn Kröger on 10.10.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ellesmerocerida - Ellesmeroceratidae
Burenoceras peramplum Ulrich et al. 1943