Big Bend National Park (west and east parts) (Cretaceous to of the United States)

Also known as Mosasaur localities

Where: Brewster County, Texas (29.3° N, 103.6° W: paleocoordinates 33.2° N, 73.2° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Inoceramus undulatoplicatus other zone, San Vicente Member (Boquillas Formation), Late/Upper Coniacian to Late/Upper Coniacian (89.3 - 83.5 Ma)

• Stratigraphy in text not defined with respect to geographic locality. Same geographical data will be used, and divisions based upon stratigraphic information. PJW: Inoceramus undulatoplicatus zone is Early Santonian, not Late Coniacian.

• formation-level stratigraphic resolution

Environment/lithology: marine; limestone

• The San Vicente Member of the Boquillas Formation contains generally softer chalky limestone beds that tend to be of more uniform thickness than the Ernst Member, with more soft marl and shaley beds near the top.

Size class: macrofossils

Primary reference: G. L. Bell Jr., K. R. Barnes, and M. J. Polcyn. 2013. Late Cretaceous mosasauroids (Reptilia, Squamata) of the Big bend region in Texas, USA. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 103:571-581 [P. Mannion/J. Tennant/F. Aspromonte]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 151422: authorized by Philip Mannion, entered by Jonathan Tennant on 01.10.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Squamata - Mosasauridae
Tylosaurus kansasensis, Tylosaurus nepaeolicus, Platecarpus planifrons
Tylosaurus kansasensis Everhart 2005 mosasaur
SMU76543, complete skull and near-complete postcranium
Tylosaurus nepaeolicus Cope 1874 mosasaur
SMU76532 (skeleton), SMU76544 (large skull and partial postcrania), SMU76546 (articulated skull and partial postcrania)
Platecarpus planifrons Cope 1874 mosasaur
TMM 43354-1 (skull, numerous vertebrae, and anterior appendicular elements), SMU76542 (a fragmentary specimen) (possibly also SMU76540)