SE of Pierre: Late/Upper Campanian, South Dakota
collected by D. R. Crandell 1948

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Mosasauridae
Mosasaurus missouriensis n. sp. (Harlan 1834)
Bardet 2012
MNHN 9587, anterior fragment of the premaxilla; RFWUIP 1327
Plioplatecarpus primaevus n. sp. Russell 1967
1 specimen
USNM 18254
Chondrichthyes - Squalomorphii - Hexanchidae
Notidanodon sp. Cappetta 1975
Martin 2016 1 specimen
SDSM 86930
see common names

Geography
Country:United States State/province:South Dakota County:Hughes
Coordinates: 44.5° North, 100.4° West (view map)
Paleocoordinates:49.6° North, 67.8° West
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Late/Upper Campanian
Age range of interval:83.50000 - 70.60000 m.y. ago
Stratigraphy
Geological group:Montana Formation:Pierre Shale Member:DeGrey
Stratigraphic resolution:bed
Stratigraphy comments: "DeGrey Member, Lower Pierre Shale, South Dakota" (1967); earlier listed as from the Ocama Mbr.
Lithology and environment
Primary lithology: "shale"
Includes fossils?Y
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Preservation of anatomical detail:medium
Abundance in sediment:rare
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:survey of museum collection
Collection size:1 specimens
Reason for describing collection:general faunal/floral analysis
Museum repositories:USNM
Collectors:D. R. Crandell Collection dates:1948
Taxonomic list comments:Specimen named Plioplatecarpus primaevus as a new species in 1967, but the name given to the same specimen in 1964 (Plioplatecarpus houzeaui) not listed in the synonymy.
Metadata
Also known as:Big Bend along the Missouri River
Database number:107704
Authorizer:M. Carrano, P. Holroyd, P. Mannion Enterer:H. Street, P. Holroyd, J. Tennant
Modifier:P. Mannion Research group:vertebrate
Created:2011-04-14 05:50:37 Last modified:2018-06-14 12:14:23
Access level:the public Released:2011-04-14 05:50:37
Creative Commons license:CC BY
Reference information

Primary reference:

35745.ETE D. A. Russell. 1964. The Skull of American Mosasaurs. 1-386 [M. Carrano/H. Street/P. Wagner]

Secondary references:

46107 N. Bardet. 2012. The mosasaur collections of the Museum National d'Histoire Naturelle of Paris. Bulletin de la Societe Geologique de France 183(1):35-53 [P. Mannion/J. Tennant]
65941 T. Konishi, M. G. Newbrey, and M. W. Caldwell. 2014. A small, exquisitely preserved specimen of Mosasaurus missouriensis (Squamata, Mosasauridae) from the upper Campanian of the Bearpaw Formation, western Canada, and the first stomach contents for the genus. Journal of Vertebrate Paleontology 34(4):802-819 [P. Mannion/P. Mannion]
82170 J. E. Martin. 2016. A hexanchid shark from the Late Cretaceous Pierre Shale Group of the Western Interior Seaway of North Amercia [sic] . Proceedings of the South Dakota Academy of Science 95:69-72 [P. Holroyd/P. Holroyd]
36230ETE D. A. Russell. 1967. Systematics and morphology of American mosasaurs (Reptilia, Sauria). Bulletin of the Peabody Museum of Natural History 23:1-252 [M. Carrano/H. Street/M. Carrano]