PBDB Collection

Beaver Dam Mountains BM1, Bed 18A (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• coordinate based on unpublished field data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, calcareous marl

• Terabaratulids in bioturbated greenish limestone marl

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 62977: 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

Tentaculita
Microconchida -	Microconchus utahensis² Microconchus utahensis² Zatoń et al. 2013
Bivalvia
-	Bivalvia indet. Bivalvia indet. Linnaeus 1758 clam Right Valves Counted, 2nd Collection
Cardiida - Anthracosiidae	Unionites sp., Unionites cf. canalensis Unionites sp. Wissman 1841 clam Left Valves Counted, 2nd Collection (1) Unionites cf. canalensis Catullo 1847 clam
Carditida - Myophoricardiidae	Pseudocorbula sp. Pseudocorbula sp. Philippi 1898 clam
Trigoniida - Myophoriidae	Neoschizodus laevigatus, Myophoria sp. Neoschizodus laevigatus Ziethen 1830 clam Myophoria sp. Bronn 1834 clam 2nd Collection AM
Myalinida - Myalinidae	Promyalina "sp. a", Promyalina "sp. b", "Promyalina putiatensis" = Promyalina putiatinensis Promyalina "sp. a" Kittl 1903 clam Promyalina "sp. b" Kittl 1903 clam "Promyalina putiatensis" = Promyalina putiatinensis Kiparisova 1938 clam
Ostreida - Bakevelliidae	Bakevellia sp. Bakevellia sp. King 1848 oyster Right Valves Counted
Pectinida - Aviculopectinidae	Eumorphotis ericius¹ Eumorphotis ericius¹ Hautmann et al. 2013 scallop 2nd Collection (12)
Pectinida - Hunanopectinidae	Leptochondria "sp. b", Leptochondria "sp. a", Leptochondria sp., "Leptochondria cf. thaynesiana" = Leptochondria curtocardinalis Leptochondria "sp. b" Bittner 1891 scallop Right Valves Counted Leptochondria "sp. a" Bittner 1891 scallop Left Valves Counted Leptochondria sp. Bittner 1891 scallop Left Valves Counted "Leptochondria cf. thaynesiana" = Leptochondria curtocardinalis Hall and Whitfield 1877 scallop
Gastropoda
-	Gastropoda indet. Gastropoda indet. Cuvier 1795 snail 2nd Collection [originally entered as "Gastropoda sp."]
Neritoidea - Naticopsidae	Naticopsis depressispira, Naticopsis sp. Naticopsis depressispira snail 2nd Collection AM Naticopsis sp. M'Coy 1844 snail
Caenogastropoda - Coelostylinidae	? Coelostylina sp. ? Coelostylina sp. Kittl 1894 snail 2nd Collection AM
Rhynchonellata
Rhynchonellida -	Rhynchonellida indet. Rhynchonellida indet. Kuhn 1949 2nd Collection AM
Rhynchonellida - Norellidae	Piarorhynchella triassica Piarorhynchella triassica Girty 1927
Terebratulida - Gusarellidae	Protogusarella smithi Protogusarella smithi Perry and Chatterton 1979
Echinoidea
-	Echinoidea indet. Echinoidea indet. Leske 1778 sea urchin 2nd Collection AM
Cidaroida - Triadotiaridae	Lenticidaris sp. Lenticidaris sp. Kier 1968 pencil urchin

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