FHSM VP-2495 locality, Trego County: Late/Upper Coniacian, Kansas
collected by R. Zakrzewski 1969

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Mosasauridae
Clidastes velox (Marsh 1871)
Bardet 2012
synonym of Clidastes propython
About thirty vertebrae
Tylosaurus sp. Marsh 1872
Bardet 2012
MNHN 1892-6, articulated near-complete specimen
Tylosaurus kansasensis Everhart 2005
FHSM VP-2495 - paratype - juvenile (disarticulated, near-complete skull, missing the premaxilla and the anteriormost portion of the vertebral column: 83 vertebrae)
Platecarpus ictericus (Cope 1870)
Bardet 2012
synonym of Platecarpus tympaniticus
Seven vertebrae
Platecarpus coryphaeus (Cope 1871)
Bardet 2012
synonym of Platecarpus tympaniticus
MNHN 1894-14b, an almost complete skull; About twenty mixed bones including 9 caudal vertebrae and a mounted forelimb
see common names

Geography
Country:United States State/province:Kansas County:Trego
Coordinates: 38.9° North, 100.1° West (view map)
Paleocoordinates:40.9° North, 66.0° West
Basis of coordinate:based on political unit
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Coniacian 10 m.y. bin:Cretaceous 6
Key time interval:Late/Upper Coniacian
Age range of interval:89.30000 - 85.80000 m.y. ago
Stratigraphy
Geological group:Colorado Formation:Niobrara Member:Smoky Hill Chalk
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: chalk
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Feeding/predation traces:tooth marks
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collectors:R. Zakrzewski Collection dates:November 1969
Metadata
Also known as:Tylosaurus kansasensis paratype
Database number:118152
Authorizer:P. Mannion Enterer:P. Mannion, J. Tennant
Modifier:M. Carrano
Created:2011-10-06 22:10:25 Last modified:2016-03-10 16:30:03
Access level:the public Released:2011-10-06 22:10:25
Creative Commons license:CC BY
Reference information

Primary reference:

38037. M. J. Everhart. 2005. Tylosaurus kansasensis, a new species of tylosaurine (Squamata, Mosasauridae) from the Niobrara Chalk of western Kansas, USA. Netherlands Journal of Geosciences — Geologie en Mijnbouw 84(3):231-240 [P. Mannion/P. Mannion]

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]