Site IGM-2776, Tlayúa Quarry (Cretaceous to of Mexico)

Also known as Tlayua Quarry, Tepexi de Rodrìguez

Where: Puebla, Mexico (18.6° N, 97.9° W: paleocoordinates 16.5° N, 62.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Middle Member (Tlayúa Formation), Middle Albian to Middle Albian (109.0 - 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

• Environment based on Espinosa-Arrubarrena and Applegate (1996). "The strata were deposited in the Tlayua lagoon, a back lagoon with a lethal bottom, which was separate from a bio-rich lagoon by a barrier. Some rivers lowed into the Tlayua lagoon from the continental arid land located at the west; to the east, the bio-rich lagoon was surrounded by a coral reef connected to the Tethys Sea.
• 35-meter sequence of honey-colored, micritic, laminated limestone, with characteristic red, hematitic limestone layers that bear a great diversity of invertebrates and vertebrates

Size class: macrofossils

Preservation: adpression

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

Primary reference: J. Alvarado-Ortega and L. Espinosa-Arrubarrena. 2008. A New Genus of Ionoscopiform Fish (Halecomorphi) from the Lower Cretaceous (Albian) Lithographic Limestones of the Tlayúa Quarry, Puebla, Mexico. Journal of Paleontology 82(1):163-175 [S. Peters/S. McMullen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 134809: authorized by Shanan Peters, entered by Sharon McMullen on 17.10.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Halecomorphi - Ionoscopidae
Quetzalichthys perrilliatae
Quetzalichthys perrilliatae Alvarado-Ortega and Espinosa-Arrubarrena 2008 ray-finned fish