Chalk Hill Road (CHR) (Cretaceous of the United States)

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; poorly lithified shale

Size class: macrofossils

Collection methods: Repository: Institut des Sciences de l'Evolution, Université de Montpellier

Primary reference: H. Cappetta and G. R. Case. 1999. Additions aux faunes de sélaciens du Crétacé du Texas (Albien supérieur-Campanien). Palaeo Ichthyologica 9:5-111 [G. Liggett/G. Liggett/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 213300: authorized by Matthew Clapham, entered by Matthew Clapham on 28.08.2020

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Hybodontiformes - Ptychodontidae
Ptychodus mammillaris Agassiz 1835 elasmobranch
Ptychodus whipplei Marcou 1858 elasmobranch
Ptychodus rugosus Dixon 1850 elasmobranch
 Lamniformes - Cretoxyrhinidae
Cretoxyrhina mantelli Agassiz 1835 mackerel shark
 Lamniformes - Anacoracidae
Squalicorax sp. Whitley 1939 crow shark
Squalicorax curvatus Williston 1900 crow shark
 Lamniformes - Pseudoscapanorhynchidae
Cretodus crassidens Dixon 1850 mackerel shark