Hurricane Cliffs Locality HC 6 Bed 9 (Triassic of the United States)

Where: Washington County, Utah (37.1° N, 113.2° W: paleocoordinates 7.9° N, 39.1° 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• coordinate based on unpublished field data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, green, calcareous sandstone

• Greenish calcareous siltstone with marly partings with about 5cm basal bed with rynchionellids and Holocrinus with a shell bed on top containing Promyalina, echinoid spines and Leptochondria, Eumorphotis and other bivalves. Base of bed drapes into hollow of undulose Bed 8.

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 63014: 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
Bivalvia
 Pectinida - Hunanopectinidae
Leptochondria sp., "Leptochondria cf. thaynesiana" = Leptochondria curtocardinalis, Leptochondria nuetzeli
Leptochondria sp. Bittner 1891 scallop
"Leptochondria cf. thaynesiana" = Leptochondria curtocardinalis Hall and Whitfield 1877 scallop
Leptochondria nuetzeli Hautmann et al. 2013 scallop
 Pectinida - Aviculopectinidae
Eumorphotis sp.
Eumorphotis sp. Bittner 1901 scallop
 Ostreida - Bakevelliidae
Bakevellia sp., ? Bakevellia sp., Bakevellia cf. exporrecta
Bakevellia sp. King 1848 oyster
? Bakevellia sp. King 1848 oyster
Bakevellia cf. exporrecta Lepsius 1878 oyster
 Myalinida - Myalinidae
Promyalina sp., "Promyalina putiatensis" = Promyalina putiatinensis
Promyalina sp. Kittl 1903 clam
"Promyalina putiatensis" = Promyalina putiatinensis Kiparisova 1938 clam
 Cardiida - Anthracosiidae
Unionites sp.
Unionites sp. Wissman 1841 clam
Rhynchonellata
 Terebratulida - Gusarellidae
Protogusarella smithi
Protogusarella smithi Perry and Chatterton 1979
Crinoidea
 Holocrinida - Holocrinidae
Holocrinus sp.
Holocrinus sp. Wachsmuth and Springer 1886 Sea lily