Where: Wyoming (43.6° N, 110.4° W: paleocoordinates 15.3° N, 32.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Franson Member (Phosphoria Formation), Wuchiapingian (259.9 - 254.2 Ma)
• 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.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithology not reported
Size class: macrofossils
Preservation: mold/impression
Primary reference: K.W. Ciriacks. 1963. Permian and Eotriassic bivalves of the middle Rockies. Bulletin of the American Museum of Natural History 125(1):1-100 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 95417: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2010
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
"Aviculopecten cf. gryphus" = Heteropecten gryphus
"Aviculopecten cf. gryphus" = Heteropecten gryphus Newell 1938 scallop | |
? Bakevellia sp. King 1848 oyster | |
"Costatoria ? sexradiata" = Procostatoria sexradiata
"Costatoria ? sexradiata" = Procostatoria sexradiata Branson 1930 clam | |
"? Schizodus cf. oklahomensis" = Lyroschizodus oklahomensis
"? Schizodus cf. oklahomensis" = Lyroschizodus oklahomensis Beede 1907 clam | |
Celtoides unioniformis Newell 1957 clam |