Elm Lake Spillway: Campanian, South Dakota
collected by J. Bump, H. Martin 1945

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Baculitidae
Baculites compressus Say 1920
Reptilia - Mosasauridae
Mosasaurus missouriensis (Harlan 1834)
Russell 1964 1 specimen
SDSM 452, partial skeleton; called Mosasaurus poultneyi by Martin
see common names

Geography
Country:United States State/province:South Dakota County:Brown
Coordinates: 45.9° North, 98.7° West (view map)
Paleocoordinates:50.3° North, 64.5° West
Basis of coordinate:based on nearby landmark
Geographic resolution:small collection
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Campanian
Age range of interval:83.60000 - 72.10000 m.y. ago
Stratigraphy
Geological group:Montana Formation:Pierre Shale Member:Virgin Creek
Stratigraphic resolution:bed
Stratigraphy comments: "probably from Virgin Creek member"
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
Fragmentation:occasional
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:SDSM
Collectors:J. Bump, H. Martin Collection dates:fall 1945
Collection method comments: Most of the skull and jaw material had been dis-articulated and washed downstream by the time of discovery of the skeleton, but "some of the pieces were recovered from neighbors and other visitors who had taken home a souvenir of the beast."
Metadata
Database number:107779
Authorizer:M. Carrano Enterer:H. Street
Modifier:M. Carrano Research group:vertebrate
Created:2011-04-15 05:03:13 Last modified:2012-01-31 17:09:03
Access level:the public Released:2011-04-15 05:03:13
Creative Commons license:CC BY
Reference information

Primary reference:

35923.ETE H. Martin. 1953. Mosasaurus poultneyi a South Dakota mosasaur. 1-65 [M. Carrano/H. Street/M. Uhen]

Secondary references:

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