Where: Oaxaca, Mexico (17.1° N, 97.5° W: paleocoordinates 12.9° N, 51.3° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Subthurmannia boissieri ammonoid zone, Sabinal Formation, Late/Upper Berriasian (145.0 - 140.2 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, silty shale

Size class: macrofossils

Preservation: mold/impression

Collection methods: Repository: Coleccion de Paleontología de Coahuila
(CPC), at the Museo del Desierto, Saltillo, Coahuila state, Mexico

Primary reference: P. Zell, W. Stinnesbeck, S. Beckmann, T. Adatte, and F. Hering. 2015. The Berriasian-Valanginian (Early Cretaceous) boundary transition at Santa Catarina Ticuá, Oaxaca state, southern Mexico: ammonites, bivalves, calpionellids and their paleobiogeographic significance. Journal of South American Earth Sciences 62:33-57 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 171678: authorized by Matthew Clapham, entered by Matthew Clapham on 16.07.2015

Creative Commons license: CC BY (attribution)