Beaver Dam Mountains BD-B-0 (Triassic of the United States)

Where: Utah (37.0° N, 113.7° W: paleocoordinates 8.0° N, 39.5° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: shoreface; lithified, sandy packstone

• Shallow subtidal bars of the shoreface zone
• Mainly trough cross-bedded and occasionally planar-bedded, sandy packstone and grainstone

Size class: macrofossils

Preservation: mold/impression

Collected by R. Hofmann, M. Wasmer in 2009, 2010

Primary reference: R. Hofmann, M. Hautmann, M. Wasmer and H. Bucher. 2013. Palaeoecology of the Spathian Virgin Formation (Utah, USA) and its implications for the Early Triassic recovery. Acta Palaeontologica Polonica 58:149-173 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 122201: authorized by Matthew Clapham, entered by Matthew Clapham on 19.12.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
 Holocrinida - Holocrinidae
Holocrinus smithi Clark and Twitchell 1915 Sea lily
Echinoidea
 Cidaroida - Miocidaridae
Miocidaris utahensis pencil urchin
Rhynchonellata
 Terebratulida - Gusarellidae
Protogusarella smithi Perry and Chatterton 1979
 Rhynchonellida - Norellidae
Bivalvia
 Cardiida - Anthracosiidae
Unionites fassaensis Wissmann 1841 clam
 Carditida - Myophoricardiidae
Sementiconcha recuperator Hautmann et al. 2013 clam
 Pectinida - Aviculopectinidae
Eumorphotis ericius Hautmann et al. 2013 scallop
Eumorphotis cf. multiformis Bittner 1899 scallop
Eumorphotis cf. venetiana Hauer 1850 scallop
 Ostreida - Bakevelliidae
Bakevellia costata Schlotheim 1820 oyster
Bakevellia exporrecta Lepsius 1878 oyster
 Myalinida - Myalinidae
Promyalina putiatinensis Kiparisova 1938 clam
Gastropoda
  -
Gastropoda "indet. A" Cuvier 1795 snail
 Euomphalina - Codonocheilidae
Natiria cf. costata Munster 1841 snail