Mitchell Creek B/a MCBac (Permian of the United States)

Where: Texas (33.7° N, 99.1° W: paleocoordinates 2.2° N, 28.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Talpa Formation, Kungurian (279.3 - 272.3 Ma)

• Upper part of Clyde Formation (now Talpa Formation)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

• Based on formation

Size class: microfossils

Collection methods: chemical, acetic,

Primary reference: G. D. Johnson. 1981. Hybodontoidei (Chondrichthyes) from the Wichita-Albany Group (Early Permian) of Texas. Journal of Vertebrate Paleontology 1(1):1-41 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117093: authorized by Matthew Clapham, entered by Matthew Clapham on 15.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chondrichthyes
 Hybodontiformes - Acrodontidae
? Acrodus sweetlacruzensis, ? Acrodus olsoni
? Acrodus sweetlacruzensis Johnson 1981 elasmobranch
? Acrodus olsoni Johnson 1981 elasmobranch
 Hybodontiformes - Polyacrodontidae
Polyacrodus wichitaensis
Polyacrodus wichitaensis Johnson 1981 elasmobranch