Where: Fall River County County, South Dakota (43.2° N, 103.6° W: paleocoordinates 49.1° N, 71.7° W)
• coordinate based on nearby landmark
When: Baculites sp. (smooth) - Baculites perplexus ammonoid zone, Sharon Springs Member (Pierre Shale Formation), Early/Lower Campanian to Early/Lower Campanian (83.5 - 70.6 Ma)
• The Sharon Springs Member spans Baculites sp. (smooth) - Baculites perplexus in South Dakota (Gill et al. 1972)
• bed-level stratigraphic resolution
Environment/lithology: marine; lithology not reported
Size class: macrofossils
Reposited in the USNM
Primary reference: K. Carpenter. 1996. A review of short-necked plesiosaurs of the Western Interior, North America. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen 201(2):259-287 [M. Carrano/H. Street]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 117861: authorized by Roger Benson, entered by Roger Benson on 28.09.2011
Creative Commons license: CC BY (attribution)
Taxonomic list
Reptilia | |
Dolichorhynchops osborni Williston 1902 plesiosaur USNM 50122 (skull), 55810 (juvenile fragmentary skull and partial skeleton)
|