Beaver Dam Mountains BM5, Bed 12A (Triassic of the United States)

Where: Washington County, Utah (37.1° N, 113.7° W: paleocoordinates 8.0° N, 39.5° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: lithified, gray, green shale

• Grey-green shale

Size class: macrofossils

Preservation: mold/impression

Primary reference: A. J. McGowan, A. B. Smith, and P. D. Taylor. 2009. Faunal diversity, heterogeneity and body size in the Early Triassic: testing post-extinction paradigms in the Virgin Limestone of Utah, USA. Australian Journal of Earth Sciences 56:859-872 [A. McGowan/A. McGowan/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 63205: authorized by Alistair McGowan, entered by Alistair McGowan on 09.08.2006, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Foraminifera
 Lituolacea - Haplophragmoiidae
Placopsilina sp.
Placopsilina sp. d'Orbigny 1850
Echinoidea
 Cidaroida - Triadotiaridae
Lenticidaris sp., Lenticidaris utahensis
Lenticidaris sp. Kier 1968 pencil urchin
Lenticidaris utahensis Kier 1968 pencil urchin
Crinoidea
 Holocrinida - Holocrinidae
Holocrinus sp.
Holocrinus sp. Wachsmuth and Springer 1886 Sea lily
Tentaculita
 Microconchida -
Microconchus utahensis
Microconchus utahensis ZatoĊ„ et al. 2013
Gastropoda
 Trochoidea - Colloniidae
Chartronella sp.
Chartronella sp. Cossman 1902 snail
 Murchisoniina - Phymatopleuridae
Worthenia windowblindensis
Worthenia windowblindensis Batten and Stokes 1986 snail
2nd Collection
Bivalvia
  -
Bivalvia indet.
Bivalvia indet. Linnaeus 1758 clam
Left Valves Counted, 2nd Collection [originally entered as "Bivalvia sp."]
 Pholadomyida - Pholadomyidae
Homomya sp.
Homomya sp. Agassiz 1843 clam
 Cardiida - Kalenteridae
Permophorus triassicus
Permophorus triassicus Newell and Boyd 1999 clam
 Carditida - Myophoricardiidae
Pseudocorbula sp.
Pseudocorbula sp. Philippi 1898 clam
 Trigoniida - Myophoriidae
Myophoria sp.
Myophoria sp. Bronn 1834 clam
 Myalinida - Myalinidae
"Promyalina putiatensis" = Promyalina putiatinensis
"Promyalina putiatensis" = Promyalina putiatinensis Kiparisova 1938 clam
 Pectinida - Pectinoidae
Pleuronectites sp.
Pleuronectites sp. Schlotheim 1820 scallop
 Pectinida - Hunanopectinidae
Leptochondria "sp. a", "Leptochondria cf. thaynesiana" = Leptochondria curtocardinalis
Leptochondria "sp. a" Bittner 1891 scallop
Left Valves Counted, 2nd Collection
"Leptochondria cf. thaynesiana" = Leptochondria curtocardinalis Hall and Whitfield 1877 scallop
 Pectinida - Aviculopectinidae
? Eumorphotis sp., Eumorphotis multiformis
? Eumorphotis sp. Bittner 1901 scallop
Eumorphotis multiformis Bittner 1899 scallop
 Pectinida - Entoliidae
Entolium sp.
Entolium sp. Meek 1865 scallop
 Ostreida - Bakevelliidae
Bakevellia cf. costata, Bakevellia cf. exporrecta
Bakevellia cf. costata Schlotheim 1820 oyster
Bakevellia cf. exporrecta Lepsius 1878 oyster
2nd Collection
Rhynchonellata
 Rhynchonellida - Norellidae
Piarorhynchella triassica
 Terebratulida - Gusarellidae
Protogusarella smithi
Protogusarella smithi Perry and Chatterton 1979