Locality 370 Tlayúa Quarry (Cretaceous of Mexico)

Also known as Aranguthy quarry

Where: Puebla, Mexico (18.6° N, 97.9° W: paleocoordinates 16.5° N, 61.5° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Middle Member (Tlayúa Formation), Albian (113.0 - 100.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; brown, yellow lime mudstone and hematitic, red lime mudstone

• 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

Collected by Aranguthy family and their Tlayua quarry workers

• Repository: Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, México (IMG)

Primary reference: K. González-Rodríguez, S. P. Applegate, and L. Espinosa-Arrubarrena. 2004. A New World macrosemiid (Pisces: Neopterygii-Halecostomi) from the Albian of México. Journal of Vertebrate Paleontology 24(2):281-289 [S. Peters/S. McMullen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 136733: authorized by Shanan Peters, entered by Sharon McMullen on 03.12.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

• Of the vertebrates, fishes are most abundant, and include coelacanths, semionotids, pycnodonts, amiids, ophiopsids, aspidorhynchids, ichthyodectids, elopids, clupeomorphs, gonorhynchids, and berycoids (Applegate, 1996).
 Semionotiformes - Macrosemiidae
Macrosemiocotzus americanus n. gen. n. sp. González-Rodríguez et al. 2004