AMNH B673, Peak 10233, Clause Peak, Lincoln County (Permian of the United States)

Where: Wyoming (43.1° N, 110.6° W: paleocoordinates 15.0° N, 32.4° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• 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 61948: authorized by Pete Wagner, entered by Pete Wagner on 08.07.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Trochonematoidea - Lophospiridae
Worthenia corrugata Chronic 1952 snail
 Euomphalina - Omphalotrochidae
"Gyronema clausepeakensis n. sp." = Cinclidonema clausepeakensis
"Gyronema clausepeakensis n. sp." = Cinclidonema clausepeakensis Kulas and Batten 1997 snail
 Euomphalina - Platyceratidae
"Platyceras (Platyceras) yochelsoni" = Platyceras yochelsoni
"Platyceras (Platyceras) yochelsoni" = Platyceras yochelsoni Kulas and Batten 1997 snail
 Euomphalina - Craspedostomatidae
Natiria americana Girty 1915 snail
 Prosobranchia - Orthonematidae
? Orthonema sp. Meek and Worthen 1862 snail
 Cerithimorpha - Orthonemidae
"Goniasma geminocarinata" = Donaldospira geminocarinata
"Goniasma geminocarinata" = Donaldospira geminocarinata Chronic 1952 snail
 Bellerophontida - Euphemitidae
Euphemitopsis multinodosa Yochelson 1960 snail
 Murchisoniina - Soleniscidae
Strobeus primogenius Conrad 1835 snail