AMNH2010, Beaver Creek (Permian of the United States)

Where: Wyoming (42.6° N, 108.4° W)

• Paleocoordinates: 13.1° N, 30.1° W (Wright 2013)

• coordinate estimated from map

• small collection-level geographic resolution

When: Grandeur Member (Park City Formation), Kungurian (279.3 - 272.3 Ma)

• Five-inch thick fossiliferous layer, part of a prominent eight-foot thick limestone ledge in the Grandeur Member (Kungurian with Mesogondolella idahoensis; Henderson & Mei, 2000)

• bed-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified packstone

Size class: macrofossils

Preservation: original silica

Reposited in the AMNH

Primary reference: D. W. Boyd and N.D. Newell. 1972. Taphonomy and diagenesis of a Permian fossil assemblage from Wyoming. Journal of Paleontology 46(1):1-14 [M. Clapham/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 81512: authorized by Matthew Clapham, entered by Matthew Clapham on 28.06.2008

Creative Commons license: CC0 (CC0)

Taxonomic list

Trilobita
 Proetida - Phillipsiidae
"Anisopyge sevilloidia n. sp." = Delaria sevilloidia2
"Anisopyge sevilloidia n. sp." = Delaria sevilloidia2 Chamberlain 1970 trilobite
Bivalvia
 Nuculanida - Polidevciidae
Polidevcia sp. Tschernyschev 1943 clam
 Nuculida - Nuculidae
Nuculopsis sp. Girty 1912 nut clam
66 left valves, 68 left valves, 16 articulated
 Myalinida - Myalinidae
Myalina sp. de Koninck 1842 clam
 Pectinida - Pseudomonotidae
Pseudomonotis (Trematiconcha) likharevi3 Newell and Boyd 1970 scallop
 Carditida - Astartidae
Astartella aueri n. sp.1 Boyd and Newell 1968 clam
91 left valves, 100 right valves, 1 articulated
 Actinodontida - Oriocrassatellidae
Oriocrassatella elongata n. sp.1 Boyd and Newell 1968 clam
390 left valves, 364 right valves, 2 articulated
 Trigoniida - Schizodidae
Schizodus wyomingensis n. sp.4 Newell and Boyd 1975 clam
Schizodus bifidus4 Ciriacks 1963 clam
Schizodus altus n. sp.4 Newell and Boyd 1975 clam
225 left valves, 213 right valves, 6 articulated
Kaibabella basilica n. sp.4 Newell and Boyd 1975 clam
757 left valves, 747 right valves, 2 articulated
Eoastarte subcircularis4 Ciriacks 1963 clam
 Trigoniida - Scaphellinidae
"Scaphellina bradyi" = Scaphellina concinna
"Scaphellina bradyi" = Scaphellina concinna Branson 1930 clam
557 left valves, 575 right valves, 1 articulated