PBDB Collection

Beaver Dam Mountains BM1, Bed 13 (Triassic of the United States)

Where: Washington County, Utah (37.1° N, 113.8° W: paleocoordinates 8.1° 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• coordinate based on unpublished field data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, bioturbated limestone

• Rubbly limestone, bioturbated, lots of shell material bioencrusted forming ledge

Size class: macrofossils

Preservation: mold/impression

Collection methods: surface (in situ),

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 62974: authorized by Alistair McGowan, entered by Alistair McGowan on 02.08.2006, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Echinoidea
Cidaroida - Triadotiaridae	Lenticidaris sp., Lenticidaris utahensis Lenticidaris sp. Kier 1968 pencil urchin Lenticidaris utahensis Kier 1968 pencil urchin 2nd Collection ABS
Crinoidea
Holocrinida - Holocrinidae	Holocrinus sp. Holocrinus sp. Wachsmuth and Springer 1886 Sea lily
Tentaculita
Microconchida -	Microconchus utahensis² Microconchus utahensis² Zatoń et al. 2013
Gastropoda
Neritoidea - Naticopsidae	Naticopsis utahensis Naticopsis utahensis Batten and Stokes 1986 snail 2nd Collection ABS
Bivalvia
Pholadida - Pleuromyidae	Pleuromya cf. musculoides Pleuromya cf. musculoides clam
Cardiida - Kalenteridae	? Pseudomyoconcha sp., Myoconcha cf. plana¹ ? Pseudomyoconcha sp. Rossi et al. 1966 clam 2nd Collection ABS Myoconcha cf. plana¹ Kiparisova 1938 clam
Cardiida - Anthracosiidae	Unionites sp. Unionites sp. Wissman 1841 clam 2nd Collection ABS
Carditida - Myophoricardiidae	Pseudocorbula sp. Pseudocorbula sp. Philippi 1898 clam
Trigoniida - Myophoriidae	"Myophoria cf. orbicularis" = Neoschizodus orbicularis, ? Myophoria sp. "Myophoria cf. orbicularis" = Neoschizodus orbicularis Bronn 1837 clam ? Myophoria sp. Bronn 1834 clam Left-Hand Valves Counted, 2nd Collection AM
Trigoniida - Trigonodidae	Trigonodus cf. sandbergeri¹, Trigonodus cf. orientalis¹ Trigonodus cf. sandbergeri¹ von Alberti 1864 clam Trigonodus cf. orientalis¹ Bittner 1899 clam
Myalinida - Myalinidae	Promyalina "sp. a", "Promyalina putiatensis" = Promyalina putiatinensis Promyalina "sp. a" Kittl 1903 clam "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 "Leptochondria cf. thaynesiana" = Leptochondria curtocardinalis Hall and Whitfield 1877 scallop 2nd collection ABS
Pectinida - Aviculopectinidae	Eumorphotis ericius¹ Eumorphotis ericius¹ Hautmann et al. 2013 scallop
Ostreida - Bakevelliidae	Bakevellia cf. costata, Bakevellia cf. exporrecta Bakevellia cf. costata Schlotheim 1820 oyster Bakevellia cf. exporrecta Lepsius 1878 oyster
Rhynchonellata
Rhynchonellida - Norellidae	Piarorhynchella triassica Piarorhynchella triassica Girty 1927
Terebratulida - Gusarellidae	Protogusarella smithi Protogusarella smithi Perry and Chatterton 1979 2nd Collection AM

¹Hautmann et al. 2013; ²Zatoń et al. 2013