Where: Wyoming (43.2° N, 109.2° W)

• Paleocoordinates: 27.8° N, 30.7° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tosi Member (Phosphoria Formation), Lopingian (259.9 - 252.2 Ma)

• 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.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Reposited in the AMNH

Primary reference: K.W. Ciriacks. 1963. Permian and Eotriassic bivalves of the middle Rockies. Bulletin of the American Museum of Natural History 125(1):1-100 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87156: authorized by Matthew Clapham, entered by Matthew Clapham on 08.03.2009

Creative Commons license: CC0 (CC0)