Also known as IMNH 79002
Where: Bear Lake County, Idaho (42.5° N, 111.4° W: paleocoordinates 11.9° N, 35.3° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Thaynes Formation, Smithian to Smithian (251.3 - 247.2 Ma)
• "Smithian-Spathian.... The exact stratigraphic level is uncertain, but the material is most likely from below the Platy Siltstone Member" (i.e., in the Lower Black Shale Member)
Environment/lithology: terrestrial; poorly lithified, nodular, gray limestone
Size class: macrofossils
Collected by H. G. MacDonald in 1985
Collection methods: surface (float),
• "recovered as surface float"
•IMNH collection
Primary reference: J. A. Massare and J. M. Callaway. 1994. Cymbospondylus (Ichthyosauria: Shastasauridae) from the Lower Triassic Thaynes Formation of southeastern Idaho. Journal of Vertebrate Paleontology 14(1):139-141 [J. Alroy/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 90338: authorized by John Alroy, entered by John Alroy on 16.07.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Cymbospondylus sp. Leidy 1868 ichthyosaur |