Tlayúa Quarry (IGM collection) (Cretaceous of Mexico)

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

• 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: L. Martin-Medrano and P. Garcia-Barrera. 2006. Fossil Ophiuroids of Mexico. In F. J. Vega, T. G. Nybor, M. D. C. Perrillat, M. Montellano-Ballesteros, S. R. S. Cevallos-Ferriz, S. A. Quiroz-Barroso (eds.), Topics in Geobiology 24:115-131 [L. Villier/J. Millet/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 80283: authorized by Loic Villier, entered by Julien Millet on 10.04.2008, edited by Matthew Carrano, Richard Butler, Roger Benson, Matthew Clapham, Jonathan Tennant and Loic Villier

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Equisetopsida
 Pinidae - Pinidae
cf. Araucaria sp.6 de Jussieu 1789
 Bennettitales -
Zamites sp.6 Brongniart 1828
Ophiuroidea
 Amphilepidida - Ophiactidae
Ophiactis applegatei12 Martin-Medrano et al. 2009 brittle star
Chondrichthyes
 Rhinopristiformes -
Tlalocbatos applegatei n. gen. n. sp.8
Tlalocbatos applegatei n. gen. n. sp.8 Brito et al. 2019 elasmobranch
IGM 5853
Osteichthyes
 Ophiopsiformes - Ophiopsiellidae
Teoichthys brevipina n. sp.11 Machado et al. 2013 ray-finned fish
IGM 6741,6742, 6743, 6744, 6745, 6746, 6747, 6604
 Halecomorphi -
Cipactlichthys scutatus n. gen. n. sp.7
Cipactlichthys scutatus n. gen. n. sp.7 Brito and Alvarado-Ortega 2013 ray-finned fish
IGM.6605, 6606
Coelacanthimorpha
 Coelacanthiformes - Mawsoniidae
Axelrodichthys cf. araripensis6 Maisey 1986 coelacanth
Reptilia
 Testudines -
Testudines indet.13 Batsch 1788 turtle
Two taxa, partial skeletons
 Loricata - Goniopholididae
Goniopholididae indet.9 Cope 1875 crocodilian
2 skulls
 Pterosauria -
Ornithocheiroidea indet.14 pterosaur
Humerus, scapulocoracoids, wing-bones, femur, considered similar to Pteranodon or Nyctosaurus
cf. Nyctosaurus sp.6 Marsh 1876 pterosaur
Fragmentary articulated wing
Actinopteri
 Semionotiformes - Callipurbeckiidae
Tlayuamichin itztli n. gen. n. sp.10
Tlayuamichin itztli n. gen. n. sp.10 López-Arbarello and Alvarado-Ortega 2011
 Crossognathiformes -
Michin csernai n. gen. n. sp.3
Michin csernai n. gen. n. sp.3 Alvarado-Ortega et al. 2008
IGM 9028, 9029-9033, UERJ-PMB 105-109
 Ellimmichthyiformes - Armigatidae
Armigatus carrenoae n. sp.5 Alvarado-Ortega et al. 2020
IGM 11536, 11537, 11538, 11539, 11540, 11541, 11541, 11543
 Ellimmichthyiformes - Ellimmichthyidae
Ellimmichthys sp.4 Jordan and Gilbert 1919
 Teleostei -
Ranulfoichthys dorsonudum n. gen. n. sp.1
Ranulfoichthys dorsonudum n. gen. n. sp.1 Alvarado-Ortega 2014
IGM 9034-9047, 9467, 9468
 Elopiformes - Megalopidae
Megalops sp.6 Lacépède 1803
 Elopiformes - Elopidae
Notelops sp.6 Woodward 1901
 Araripchthyiformes - Araripichthyidae
Araripichthys weberi n. sp.2 Alvarado-Ortega and Brito 2011
IGM 6232
 Aspidorhynchiformes - Aspidorhynchidae