Also known as Tlayua Quarry, Tepexi de Rodrìguez

Where: Puebla, Mexico (18.6° N, 97.9° W: paleocoordinates 16.5° N, 64.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Tlayúa Formation, Late/Upper Albian (105.3 - 99.6 Ma)

• Middle Member. Cantu-Chapa (1987) recognized the genus Hysteroceras, Mortoniceras, and cf. Anisoceras, which represent a typical late Albian ammonite assemblage of the European zone, being similar to the Mortoniceras inflatum zone (Applegate et al., 2006).

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified, brown, yellow lime mudstone

Size class: macrofossils

Preservation: adpression

Collection methods: Repository: Paleontological Museum of the Instituto de Geologia, Universidad Nacional Autonomia de Mexico (IGM UNAM)

Primary reference: R. M. Feldmann, F. J. Vega, S. P. Applegate and G. A. Bishop. 1998. Early Cretaceous Arthropods from the Tlayua Formation at Tepexi de Rodriguez, Puebla, Mexico. Journal of Paleontology 72(1):79-90 [C. Schweitzer/C. Schweitzer/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 146357: authorized by Matthew Clapham, entered by Matthew Clapham on 22.06.2013

Creative Commons license: CC BY (attribution)