FHSM VP-13742 locality, Gove County (Cretaceous of the United States)

Also known as Tylosaurus kansasensis referred specimen

Where: Gove County, Kansas (39.0° N, 100.5° W: paleocoordinates 41.1° N, 66.4° W)

• coordinate based on political unit

When: Smoky Hill Chalk Member (Niobrara Formation), Late/Upper Coniacian (89.3 - 85.8 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; chalk

Size class: macrofossils

Collected in 1990

Primary reference: M. J. Everhart. 2004. Late Cretaceous interaction between predators and prey. Evidence of feeding by two species of shark on a mosasaur. PalArch 1(1):1-7 [P. Mannion/J. Tennant]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 118156: authorized by Philip Mannion, entered by Philip Mannion on 06.10.2011, edited by Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Squamata - Mosasauridae
Tylosaurus kansasensis Everhart 2005 mosasaur
FHSM VP-13742 - large adult, approximately 7m long (weathered and fragmentary skull, including the premaxilla, portions of both maxillae, a complete frontal and both lower jaws [lacking both quadrates], and a few bones from the front limbs). tHE anterior end of the premaxilla had apparently been sheared off by the bite of a shark and the damaged bone shows no evidence of healing
cf. Ectenosaurus clidastoides Merriam 1894 mosasaur
FHSM VP-13476, 21 articulated dorsal vertebrae and attached ribs
Chondrichthyes
 Lamniformes - Cretoxyrhinidae
Cretoxyrhina mantelli Agassiz 1835 mackerel shark
Tips of three shark teeth were embedded in the top of the premaxilla and the lateral side of both dentaries of the Tylosaurus kansasensis skeleton