Where: Chihuahua, Mexico (29.6° N, 104.9° W: paleocoordinates 29.2° N, 60.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: La Peña Formation, Late/Upper Aptian (122.5 - 113.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified marl

Size class: macrofossils

Collection methods: Repository: IGM, Museo María del Carmen Perrilliat Montoya, Coleccion Nacional de Paleontología, Instituto de Geología, UNAM

Primary reference: J. R. Ovando-Figueroa, J. A. Moreno-Bedmar, K. P. Minor, M. Franco-Rubio, A. Oviedo, P. Patarroyo, and E. Robert. 2018. Ammonite taxonomy and biostratigraphy for the upper Aptian-lower Albian (Lower Cretaceous) of Cerro Chino, Chihuahua State, northeast Mexico. Cretaceous Research 82:109-137 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 189919: authorized by Matthew Clapham, entered by Matthew Clapham on 21.11.2017

Creative Commons license: CC BY (attribution)