Английская Википедия:El Gallo Formation

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Шаблон:Infobox rockunit

Файл:North america 75mya.png
Paleogeography of the Campanian

The El Gallo Formation is a geological formation in Mexico whose strata date back to the Late Cretaceous, Campanian epoch, specifically dated to 75.21 ± 0.07 Ma and 74.55 ± 0.09 Ma.[1] Dinosaur remains are among the fossils that have been recovered from the formation.[2]

Vertebrate paleofauna

Crurotarsans

Crurotarsans of the El Gallo Formation
Genus Species Location Member Abundance Notes Images
Brachychampsa [3]
Leidyosuchus

Dinosaurs

Indeterminate theropod, coelurosaur, dromaeosaurid, tyrannosaurid, hadrosaurid, and ankylosaurid remains are known from the formation.[4] Dinosaur eggs are known from the formation.[5] Alexornis antecedens actually comes from the La Bocana Roja Formation. An indeterminate hadrosaurine is known from the formation.[6]

Dinosaurs of the El Gallo Formation
Genus Species Location Member Abundance Notes Images
cf. Chirostenotes[4] C. sp.
Gryposaurus[6] Indeterminate
Lambeosaurus[7] L. laticaudus[7]
Magnapaulia M. laticaudus
Saurornitholestinae[4] Indeterminate
cf. Troodon[8] T. formosus[8]
Tyrannosauridae[4] Indeterminate Possibly represents a new taxon.[4]

Lepidosaurs

Lepidosaurs of the El Gallo Formation
Genus Species Location Member Abundance Notes Images
Paraglyphanodon[9] Indeterminate[9] Probably a juvenile Polyglyphanodon.[5]
Polyglyphanodon[5] P. bajaensis[5]

Mammals

Mammals of the El Gallo Formation
Genus Species Location Stratigraphic position Abundance Notes Images
Mesodma[10] M. formosa[10]
Pediomys[5] Indeterminate[5]
Stygimys[9] Indeterminate[9]

Amphibians

An indeterminate albanerpetontid is known from the formation.[11]

See also

References

Шаблон:Reflist

Bibliography

Further reading

  • M. L. Chavarria-Arellano, T. R. Simões, and M. Montellano-Ballesteros. 2018. New data on the Late Cretaceous lizard Dicothodon bajaensis (Squamata, Borioteiioidea) from Baja California, Mexico reveals an unusual tooth replacement pattern in squamates. Anais da Academia Brasileira de Ciências
  • O. A. López Conde, J. Sterli, M. L. Chavarría Arellano, D. B. Brinkman, and M. Montellano Ballesteros. 2018. Turtles from the Late Cretaceous (Campanian) of El Gallo Formation, Baja California, Mexico. South American Journal of Earth Sciences 88:693-699
  • B. R. Peecook, J. A. Wilson, R. Hernandez-Rivera, M. Montellano-Ballesteros, and G. P. Wilson. 2014. First tyrannosaurid remains from the Upper Cretaceous "El Gallo" Formation of Baja California, Mexico. Acta Palaeontologica Polonica 59(1):71-80
  • A. A. Ramírez Velasco, R. Hernández Rivera, and R. Servin Pichardo. 2014. The hadrosaurian record from Mexico. In D. A. Eberth & D. C. Evans (ed.), Hadrosaurs 340-360
  • H. E. Rivera Sylva, K. Carpenter, and F. J. Aranda Manteca. 2011. Late Cretaceous nodosaurids (Ankylosauria: Ornithischia) from Mexico. Revista Mexicana de Ciencias Geológicas 28(3):371-378
  • W. J. Morris. 1973. Mesozoic and Tertiary vertebrates in Baja California. National Geographic Society Research Reports (1966) 7:197-209
  • A. Silva Bárcenas. 1969. Localidades de vertebrados fósiles en la Republica Méxicana [Vertebrate fossil localities in the Mexican Republic]. Universidad Nacional Autónoma de México, Instituto de Geología, Paleontología Mexicana 28:1-34
  • W. Langston and M. H. Oakes. 1954. Hadrosaurs in Baja California. Bulletin of the Geological Society of America 65(12):1344

  1. El Gallo Formation at Fossilworks.org
  2. "El Gallo Formation." Weishampel et al., 2004, pp.587-588
  3. "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) p. 277
  4. 4,0 4,1 4,2 4,3 4,4 Шаблон:Cite journal
  5. 5,0 5,1 5,2 5,3 5,4 5,5 "El Gallo Formation, Baja California Del Norte, Mexico," in Sullivan and Lucas (2006). Page 16.
  6. 6,0 6,1 Шаблон:Cite journal
  7. 7,0 7,1 "Appendix: Summary of the Mesozoic Reptilian Fossils of California," in Hilton (2003) p. 260
  8. 8,0 8,1 "4.5 Estado de Baja California Norte, Mexico; 1. El Gallo Formation," in Weishampel, et al. (2004). Pages 587-588.
  9. 9,0 9,1 9,2 9,3 Listed as "cf. Paraglyphanodon" in "El Gallo Formation, Baja California Del Norte, Mexico," in Sullivan and Lucas (2006). Page 16.
  10. 10,0 10,1 Listed as "Mesodma cf. M. formosa" in "El Gallo Formation, Baja California Del Norte, Mexico," in Sullivan and Lucas (2006). Page 16.
  11. Шаблон:Cite journal