southeast branch, Hackberry Creek (Cretaceous to of the United States)

Where: Dallas County, Texas (32.9° N, 97.0° W: paleocoordinates 32.4° N, 63.0° W)

• coordinate based on nearby landmark

• hand sample-level geographic resolution

When: Britton Formation (Eagle Ford Group), Middle Cenomanian to Middle Cenomanian (99.6 - 89.3 Ma)

• "SMUSMP 61866 comes from the lower (bentonitic) member of the Britton (units 1 and 2 of Norton, 1965)."

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: J. T. Thurmond. 1969. Notes on mosasaurs from Texas. The Texas Journal of Science 21(1):69-80 [M. Carrano/H. Street/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 106196: authorized by Matthew Carrano, entered by Hallie Street on 04.03.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Squamata - Mosasauridae
Mosasauridae indet. Gervais 1852 mosasaur
SMUSMP 61866, maxillary fragment