Chalk Hill Road (Cretaceous of the United States)

Where: Dallas County, Texas (32.8° N, 96.9° W: paleocoordinates 32.9° N, 63.7° W)

• coordinate estimated from map

When: Arcadia Park Member (Eagle Ford Formation), Turonian (93.9 - 89.8 Ma)

Environment/lithology: marine; shale

Primary reference: S. P. Welles and B. H. Slaughter. 1963. The first record of the plesiosaurian genus Polyptychodon (Pliosauridae) from the New World. Journal of Paleontology 37(1):131-133 [M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 57763: authorized by Mark Uhen, entered by Mark Uhen on 21.12.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

 Sauropterygia -
Polyptychodon hudsoni n. sp. Welles and Slaughter 1963 plesiosaur