Where: Teton County, Wyoming (43.6° N, 110.5° W: paleocoordinates 35.5° N, 50.5° W)

• coordinate estimated from map

When: Sundance Formation, Bajocian (170.3 - 168.3 Ma)

• From 12 to 13ft above base of unit 10 of published section (Imlay, 1956a, p. 70).

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by R. W. Imlay in 1947; reposited in the USNM

Primary reference: R. W. Imlay. 1967. Twin Creek Limestone (Jurassic) in the Western Interior of the United States. United States Geological Survey Professional Paper 540:1-105 [S. Holland/P. Monarrez]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 167244: authorized by Steven Holland, entered by Pedro Monarrez on 09.03.2015

Creative Commons license: CC BY (attribution)