Where: Wyoming (43.2° N, 109.2° W: paleocoordinates 14.5° N, 31.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Franson Member (Park City Formation), Wuchiapingian (259.9 - 254.2 Ma)

• Basal beds. Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.

• bed-level stratigraphic resolution

Environment/lithology: marine; lime mudstone and calcareous grainstone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the AMNH

• University of Washington Museum

Primary reference: N. D. Newell and D.W. Boyd. 1995. Pectinoid bivalves of the Permian-Triassic crisis. Bulletin of the American Museum of Natural History 227:1-95 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61936: authorized by Pete Wagner, entered by Pete Wagner on 08.07.2006, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)