Missouri River valley near Yankton (Cretaceous of the United States)
Where: Yankton County, South Dakota (42.9° N, 97.4° W: paleocoordinates 47.2° N, 64.7° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Sharon Springs Member (Pierre Shale Formation), Campanian (83.6 - 72.1 Ma)
• bed-level stratigraphic resolution
Environment/lithology: marine; shale
Size class: macrofossils
Collected by Simpson in 1948; reposited in the USNM
Primary reference: D. A. Russell. 1964. The Skull of American Mosasaurs. 1-386 [M. Carrano/H. Street/P. Wagner]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 107674: authorized by Matthew Carrano, entered by Hallie Street on 13.04.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
Reptilia | |
"Platecarpus ictericus" = Platecarpus tympaniticus
|