Where: Utah (37.2° N, 113.3° W: paleocoordinates 7.9° N, 39.1° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Virgin Limestone Member (Moenkopi Formation), Spathian (251.3 - 247.2 Ma)
• The Moenkopi Formation in southwestern Utah contains three limestone members. The lower limestone member, the Timpoweap is only very sparsely fossiliferous and is primarily a marginal marine deposit. The middle limestone, the Virgin Member, contains limestone units deposited under normal marine conditions during the Spathian trangression. The upper limestone, the Schnabkaib Limestone, is unfossiliferous and mainly evaporitic. These limestone members are separated by red members, informally distinguished as lower, middle, and upper.
• bed-level stratigraphic resolution
Environment/lithology: lithified limestone
Size class: macrofossils
Preservation: mold/impression
Primary reference: J. K. Schubert and D. J. Bottjer. 1995. Aftermath of the Permian-Triassic mass extinction event: Paleoecology of Lower Triassic carbonates in the western USA. Palaeogeography, Palaeoclimatology, Palaeoecology 116:1-39 [D. Bottjer/N. Bonuso/N. Bonuso]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 32936: authorized by David Bottjer, entered by Nicole Bonuso on 21.07.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Crinoidea | |
Holocrinus sp. Wachsmuth and Springer 1886 Sea lily | |
Echinoidea | |
Miocidaris sp. Döderlein 1887 pencil urchin | |
Bivalvia | |
Promyalina sp. Kittl 1903 clam
Myalina sp. de Koninck 1842 clam
"Myalinella sp." = Myalina (Myalinella) Newell 1942 clam | |
Eumorphotis sp. Bittner 1901 scallop | |
Unionites sp. Wissman 1841 clam | |
Permophorus sp. Chavan 1954 clam | |
Paullia sp. Schubert and Bottjer 1995 clam | |
Trigonioidea indet. Lamarck 1819 clam | |
Gastropoda | |
Gastropoda indet. Cuvier 1795 snail | |
Chartronella sp. Cossman 1902 snail | |
Omphaloptychia sp. von Ammon 1893 snail
Coelostylina sp. Kittl 1894 snail |