Locality 1A (McM-J1494), San Andres section, bed 2, Sierra Catorce (Jurassic of Mexico)

Where: Mexico (23.7° N, 100.9° W: paleocoordinates 19.4° N, 52.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: El Verde Member (La Caja Formation), Late/Upper Tithonian (150.8 - 145.0 Ma)

• Second bed from top, 4.5 m thick. Kossmatia-Durangites-Corongoceras assemblage.

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

• Dark grey friable limestones with a few thin shale beds.

Size class: macrofossils

Collection methods: Repository: McMaster University

Primary reference: H. M. Verma and G. E. G. Westermann. 1973. The Tithonian (Jurassic) ammonite fauna of Sierra Catorce, San Luis Potosi, Mexico. Bulletins of American Paleontology 63(277):107-320 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 197726: authorized by Matthew Clapham, entered by Matthew Clapham on 23.11.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Neocomitidae
Kossmatia purisima, Kossmatia exceptionalis, Kossmatia bifurcata, Kossmatia alamitosensis
Kossmatia purisima Verma and Westermann 1973 ammonite
Kossmatia exceptionalis Aguilera 1895 ammonite
listed in table and text, but not measured section
Kossmatia bifurcata Aguilera 1895 ammonite
Kossmatia alamitosensis Aguilera 1895 ammonite
listed in table and text, but not measured section