Where: Utah (39.6° N, 110.8° W: paleocoordinates 12.1° N, 34.4° W)
• coordinate based on political unit
• basin-level geographic resolution
When: Franson Member (Park City Formation), Wuchiapingian (259.9 - 254.2 Ma)
• Cited as Upper Franson Formation. Davydov et al. 2017 dated an ash bed in the upper Meade Peak Member at 260.57 ± 0.07 / 0.14 / 0.31 Ma, indicating that the Meade Peak is as young as uppermost Capitanian.
• member-level stratigraphic resolution
Environment/lithology: marine; lime mudstone and grainstone
Size class: macrofossils
Primary reference: E. L. Yochelson and D. H. Van Sickle. 1968. Biostratigraphy of the Phosphoria, Park City, and Shedhorn Formations; Geology of Permian Rocks in the Western Phosphate Field. United States Geological Survey Professional Paper 313(D):572-660 [A. Miller/C. Ferguson/P. Wagner]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 11232: authorized by Arnold Miller, entered by Chad Ferguson on 27.07.2001
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Schizodus cf. bifidus Ciriacks 1963 clam | |
Girtypecten sp., "Aviculopecten cf. vanvleeti" = Heteropecten vanvleeti
Girtypecten sp. Newell 1938 scallop
"Aviculopecten cf. vanvleeti" = Heteropecten vanvleeti Beede 1902 scallop | |
Stenolaemata | |
Fenestrata indet. Elias and Condra 1957 | |
| |
Rhynchonellata | |
Composita sp. Brown 1849
Composita cf. mira Girty 1899 | |
Phricodothyris sp. George 1932 | |
Spiriferina sp. d'Orbigny 1847 | |
"Spiriferina pulchra" = Xestotrema pulchrum
"Spiriferina pulchra" = Xestotrema pulchrum Meek 1860 | |
Strophomenata | |
Sphenosteges sp. Muir-Wood and Cooper 1960 | |
aff. Echinauris sp. Muir-Wood and Cooper 1960 | |
Derbyia sp. Waagen 1884 | |
Lingulata | |
Orbiculoidea sp. d'Orbigny 1847 | |
Gnathostomata | |
Osteichthyes indet. bony fish |