El Gallo Formation

The El Gallo Formation is a geological formation in Mexico whose strata date back to the Late Cretaceous, Campanian epoch. Dinosaur remains are among the fossils that have been recovered from the formation.[1]

El Gallo Formation
Stratigraphic range: Campanian
TypeGeological formation
Location
Region Baja California
Country Mexico

Vertebrate paleofauna

Crurotarsans
Crurotarsans of the El Gallo Formation
Genus Species Location Member Abundance Notes

Brachychampsa

[2]

Leidyosuchus

Dinosaurs

Dinosaur eggs are known from the formation.[3] Alexornis antecedens actually comes from the La Bocana Roja Formation.

Dinosaurs of the El Gallo Formation
Genus Species Location Member Abundance Notes Images

Ankylosauridae[4]

Indeterminate[4]

Lambeosaurus[5]

L. laticaudus[5]

Magnapaulia

M. laticaudus

Saurornitholestes[6]

Indeterminate[6]

Troodon[6]

T. formosus[6]

Lepidosaurs
Lepidosaurs of the El Gallo Formation
Genus Species Location Member Abundance Notes

Paraglyphanodon[7]

Indeterminate[7]

Probably a juvenile Polyglyphanodon.[3]

Polyglyphanodon[3]

P. bajaensis[3]

Mammals
Mammals of the El Gallo Formation
Genus Species Location Stratigraphic position Abundance Notes

Mesodma[8]

M. formosa[8]

Pediomys[3]

Indeterminate[3]

Stygimys[7]

Indeterminate[7]
gollark: That sure is a picture of a pencil alright?
gollark: Marriage should obviously be a possibly-cyclic directed weighted graph.
gollark: Personal feelings on values? Probably consequentialist arguments that it works out badly if governments have very strong control?
gollark: Or at least in longer conversations.
gollark: We are, apparently, sane enough to get above "social shaming" most of the time.

See also
  • List of dinosaur-bearing rock formations

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

Bibliography
  • Hilton, Richard P. 2003. Dinosaurs and Other Mesozoic Reptiles of California. Berkeley: University of California Press. 318 pp.
  • Sullivan, R.M., and Lucas, S.G. 2006. "The Kirtlandian land-vertebrate "age" – faunal composition, temporal position and biostratigraphic correlation in the nonmarine Upper Cretaceous of western North America." New Mexico Museum of Natural History and Science, Bulletin 35:7-29.
  • Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.

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