Tlayúa Formation

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Tlayúa Formation
Stratigraphic range: Albian
TypeGeological formation
Sub-unitsLower, Middle and Upper Members
UnderliesUnconformity with Eocene-Oligocene Pie de Vaca Formation
Overlies
ThicknessLower: 50 m Middle: 35 m Upper: 40 m
Lithology
PrimaryLimestone
OtherMudstone
Location
Coordinates19°06′N 98°12′W / 19.1°N 98.2°W / 19.1; -98.2Coordinates: 19°06′N 98°12′W / 19.1°N 98.2°W / 19.1; -98.2
Approximate paleocoordinates17°06′N 61°36′W / 17.1°N 61.6°W / 17.1; -61.6
RegionPuebla
Country Mexico
Type section
Named forTlayúa Quarry
Tlayúa Formation is located in Mexico
Tlayúa Formation
Tlayúa Formation (Mexico)

The Tlayúa Formation is an Early Cretaceous (late Albian) geological formation near Tepexi de Rodríguez, Puebla.[1]

Paleobiota[]

The formation contains a diverse array of vertebrate and invertebrate fossils. About 70% of the macrofossils are osteichthyan fish.[2] Other vertebrates include chelonians, pterosaurs, lepidosaurs, and crocodiles.[3] Cyanobacteria, foraminifera, algae, gymnosperms, sponges, cnidarians, annelids, gastropods, ammonites, bivalves, arachnids, insects, isopods, anomurans, brachyurans, crinoids, echinoids, holothuroids, stelleroids, and ophiuroids, have also been recovered from the Tlayúa Formation.[3]

Lepidosaurs[]

Genus Species Abundance Notes
Huehuecuetzpalli H. mixtecus A possible basal iguanian
Pamizinsaurus P. tlayuaensis An osteoderm-covered sphenodontian
Ankylosphenodon[4] A. pachyostosus An aquatic sphenodontian
[5] T. tepexii A basal scincomorph
Other fossils

References[]

  1. ^ Applegate, S. (1988). "A new genus and species of a holostean belonging to the family Ophiopsidae, Teoichthys kallistos, from the Cretaceous, near Tepexi de Rodriguez, Puebla" (PDF). Revista Mexicana de Ciencias Geológicas. 7 (2): 200–205.
  2. ^ Alvarado-Ortega J, González-Rodríguez KA, Blaco-Piñón A, Espinosa-Arrubarrena L, Ovalles-Damián E (2006). "Mesozoic Osteichthyans of Mexico". In Vega, FJ; TG Nyborg; MC Perrilliat; M. Montellano-Ballesteros; SRS Cevallos-Ferriz. (eds.). Studies on Mexican Paleontology, Topics on Geobiology 24. Dordrecht, Netherlands: Springer Verlag. pp. 169–207. ISBN 1402039859.CS1 maint: uses authors parameter (link)
  3. ^ a b Vega, F. J., Bruce, N. L., Serrano, L., Bishop, G. A., & Perrilliat, M. D. C. (2005). "A review of the Lower Cretaceous (Tlayúa Formation: Albian) Crustacea from Tepexi de Rodríguez, Puebla, Central Mexico" (PDF). Bulletin of the Mizunami Fossil Museum (32): 25–30. Archived from the original (PDF) on 2011-06-12.CS1 maint: uses authors parameter (link)
  4. ^ Reynoso, V. H. (2000). "An Unusual Aquatic Sphenodontian (Reptilia: Diapsida) from the Tlayua Formation (Albian), Central Mexico". Journal of Paleontology. 74 (1): 133–148. doi:10.1017/S0022336000031310. JSTOR 1306891.
  5. ^ Vega, Francisco J.; Nyborg, Torrey G.; María del Carmen Perrilliat; Marisol Montellano-Ballesteros; Sergio R.S Cevallos-Ferriz; Sara A. Quiroz-Barroso (2006). "Research on Fossil Amphibians and Reptiles". In Landman, Neil H. (ed.). Studies on Mexican Paleontology. 24. Douglas S. Jones. Dordrecht, Netherlands: Springer. p. 214. ISBN 1-4020-3882-8. Retrieved 31 May 2011.

Further reading[]

  • 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
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