ammonites
Beaver Dam Mountains BM1, Bed 11 (Triassic of the United States)

Where: Washington County, Utah (37.1° N, 113.8° W: paleocoordinates 8.1° N, 39.5° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Virgin Member (Moenkopi Formation), Spathian (251.3 - 247.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lithified, red claystone

• Red clay, well exposed. 400 cm from top. Thin calcareous shell beds with steinkerns and a Promyalina shell bed
• Bedded hard porcellaneous limestone

Size class: macrofossils

Preservation: mold/impression

Collection methods: surface (in situ),

Primary reference: A. J. McGowan, A. B. Smith, and P. D. Taylor. 2009. Faunal diversity, heterogeneity and body size in the Early Triassic: testing post-extinction paradigms in the Virgin Limestone of Utah, USA. Australian Journal of Earth Sciences 56:859-872 [A. McGowan/A. McGowan/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 62972: authorized by Alistair McGowan, entered by Alistair McGowan on 02.08.2006, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)