Cerro del Pueblo Formation

The Cerro del Pueblo Formation is a geological formation in Coahuila, Mexico whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1] The formation has been dated to between 72.5 Ma and 71.4 million years old.[2]

Cerro del Pueblo Formation Stratigraphic range: Campanian-Maastrichtian ~72.5–71.4 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Difunta Group
Underlies	Cerro Huerta Formation
Overlies	Parras Shale
Thickness	160 m (520 ft)
Lithology
Primary	Mudstone, sandstone
Other	Siltstone, conglomerate, limestone
Location
Coordinates	26.1°N 101.1°W
Approximate paleocoordinates	32.2°N 75.5°W
Region	Coahuila
Country	Mexico
Extent	Parras Basin
Cerro del Pueblo Formation (Mexico)

Paleogeography of the Campanian

Vertebrate paleofauna

Dinosaurs

Dinosaurs of the Cerro del Pueblo Formation
Genus	Species	Location	Member	Material	Notes	Images
Ceratopsia	Indeterminate
Centrosaurinae[3]	Indeterminate			CPC 279, a partial right squamosal[3]		Probably a new taxon.[3]
Coahuilaceratops[4]	C. magnacuerna[4]	Middle		CPC 276, a partial skeleton (including several skull elements) of an adult, CPS 277, possibly a juvenile.[4]
Gryposaurus	G. sp.				Reclassified as belonging to the new genus Latirhinus.[5]
Kritosaurus[6]	K. navajovius[6]			IGM 6685, a fragmentary skull represented by the rostral regions of both premaxillae and probably the rostralmost portions of the maxillae.[6]	A kritosaurin hadrosaurid, referred to K. navajovius
Latirhinus[5]	L. uitstlani[5]			IGM 6583, a fragmentary skeleton including a partial right nasal, and postcranial elements[5]	A kritosaurin hadrosaurid
Hadrosauridae	Indeterminate
Paraxenisaurus[7]	P. normalensis[7]			The remains of multiple individuals are known. Known remains include vertebrae (backbones), as well as hand and foot elements.[7]	A deinocheirid theropod
Velafrons	V. coahuilensis	Middle			A lambeosaurin hadrosaurid

Pterosaurs

Pterosaurs of the Cerro del Pueblo Formation
Taxa	Presence	Description	Images
Ichnogenus: Pteraichnus[8]	Saltillo, Coahuila[8]	Specimens kept at the Dinosaur Tracks Museum, of the University of Colorado at Denver and the Secretaría de Educación Pública de Coahuila, Mexico[8]

Turtles

Turtles of the Cerro del Pueblo Formation
Taxa	Description	Images
Euclastes coahuilaensis	Sea turtle, reclassified as belonging to the new genus Mexichelys.[9]
Mexichelys coahuilaensis[9]	New genus for Euclastes coahuilaensis, sea turtle

Color key Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon		Notes Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Other fossils

Fish

• Lepisosteus sp.
• Amiidae indet.

Fossil eggs

• Porituberoolithus sp.
• Spheroolithus sp.
• ?Prismatoolithus sp.

Mammals

• Multituberculata indet.

See also

• List of dinosaur-bearing rock formations
• List of fossiliferous stratigraphic units in Mexico

References

1. Weishampel et al., 2004, pp.574-588
2. Loewen, M. A., Sampson, S. D., Lund, E. K., Farke, A. A., Aguillón-Martínez, M. C., de Leon, C. A., ... & Eberth, D. A. (2010). Horned dinosaurs (Ornithischia: Ceratopsidae) from the Upper Cretaceous (Campanian) Cerro del Pueblo Formation, Coahuila, Mexico. New perspectives on horned dinosaurs. Edited by MJ Ryan, BJ Chinnery-Allgeier, and DA Eberth. Indiana University Press, Bloomington, 99-116. Chicago
3. Ramírez-Velasco, A. A.; Hernández-Rivera, R. (2015). "Diversity of late cretaceous dinosaurs from Mexico" (PDF). Boletín Geológico y Minero. 126 (1): 63–108.
4. Loewen, M.A., Sampson, S.D., Lund, E.K., Farke, A.A., Aguillón-Martínez, M.C., de Leon, C.A., Rodríguez-de la Rosa, R.A., Getty, M.A., Eberth, D.A., 2010, "Horned Dinosaurs (Ornithischia: Ceratopsidae) from the Upper Cretaceous (Campanian) Cerro del Pueblo Formation, Coahuila, Mexico", In: Michael J. Ryan, Brenda J. Chinnery-Allgeier, and David A. Eberth (eds), New Perspectives on Horned Dinosaurs: The Royal Tyrrell Museum Ceratopsian Symposium, Indiana University Press, 656 pp.
5. Prieto-Márquez, Albert; Serrano Brañas, Claudia Inés (2012). "Latirhinus uitstlani, a 'broad-nosed' saurolophine hadrosaurid (Dinosauria, Ornithopoda) from the late Campanian (Cretaceous) of northern Mexico". Historical Biology. 24 (6): 607–619. doi:10.1080/08912963.2012.671311.
6. Prieto-Márquez, A. (2013). "Skeletal morphology of Kritosaurus navajovius (Dinosauria:Hadrosauridae) from the Late Cretaceous of the North American south-west, with an evaluation of the phylogenetic systematics and biogeography of Kritosaurini". Journal of Systematic Palaeontology. 12 (2): 133–175. doi:10.1080/14772019.2013.770417.
7. Serrano-Brañas, Claudia Inés; Espinosa-Chávez, Belinda; Maccracken, S. Augusta; Gutiérrez-Blando, Cirene; de León-Dávila, Claudio; Ventura, José Flores (April 2020). "Paraxenisaurus normalensis, a large deinocheirid ornithomimosaur from the Cerro del Pueblo Formation (Upper Cretaceous), Coahuila, Mexico". Journal of South American Earth Sciences. 101: 102610. doi:10.1016/j.jsames.2020.102610.
8. Lockley, M.; Harris, J.D.; and Mitchell, L. 2008. "A global overview of pterosaur ichnology: tracksite distribution in space and time." Zitteliana. B28. p. 187-198. ISSN 1612-4138.
9. James F. Parham; Nicholas D. Pyenson (2010). "New Sea Turtle from the Miocene of Peru and the Iterative Evolution of Feeding Ecomorphologies since the Cretaceous". Journal of Paleontology. 84 (2): 231–247. doi:10.1666/09-077R.1.CS1 maint: multiple names: authors list (link)

Bibliography

• Gudiño Maussán, José L.; Aguilar, Felisa J.Hernández; Hernández-Rivera, René (2018). "Aplicación de fotogrametría digital para el registro de las huellas de dinosaurio de la Formación Cerro del Pueblo (Campaniano tardío), Coahuila, México" (PDF). Boletín de la Sociedad Geológica Mexicana. 70 (2): 307–324. doi:10.18268/BSGM2018v70n2a3.

Further reading

• J. L. Gudiño Maussán, F. J. Aguilar, and R. Hernández-Rivera. 2018. Aplicación de fotogrametría digital para el registro de las huellas de dinosaurio de la Formación Cerro del Pueblo (Campaniano tardío), Coahuila, México [Application of digital photogrammetry for recording dinosaur footprints of the Cerro del Pueblo Formation (late Campanian), Coahuila, Mexico]. Boletín de la Sociedad Geológica Mexicana 70(2):307-324
• D. Brinkman, M. C. Aguillon-Martinez, J. H. Hutchison and C. M. Brown. 2016. Yelmochelys rosarioae gen. et sp. nov., a stem kinosternid (Testudines; Kinosternidae) from the Late Cretaceous of Coahuila, Mexico. PaleoBios 33(30601):1-20
• 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
• D. Brinkman, M. C. Aquillon-Martinez, C. A. De Leon Dávila, H. Jamniczky, D. A. Eberth and M. Colbert. 2009. Euclastes coahuilaensis sp. nov., a basal cheloniid turtle from the late Campanian Cerro del Pueblo Formation of Coahuila State, Mexico. PaleoBios 28(3):76-88
• H. E. Rivera-Sylva and B. Espinosa-Chávez. 2006. Ankylosaurid (Dinosauria: Thyreophora) osteoderms from the Upper Cretaceous Cerro de Pueblo Formation of Coahuila, Mexico. Carnets de Géologie/Notebooks on Geology Letter(2006/02):1-5
• M. Aguillon-Martinez, D. Zelenitsky, D. B. Brinkman and D. A. Eberth. 2004. Eggshell fragments from the uppermost Cerro del Pueblo Formation (Upper Cretaceous; Mexico). Journal of Vertebrate Paleontology 24(3, suppl.):33A
• D. Eberth, S. D. Sampson, R. A. Rodriguez-De La Rosa, M. Aguillon-Martinez, D. B. Brinkman and J. Lopez-Espinoza. 2003. Las Aguilas: an unusually rich Campanian-age vertebrate locale in southern Coahuila, Mexico. Journal of Vertebrate Paleontology 23(3):47A
• R. A. Rodríguez-de la Rosa, D. A. Eberth, D. B. Brinkman, S. D. Sampson, and J. López-Espinoza. 2003. Dinosaur tracks from the late Campanian Las Aguilas locality, southeastern Coahuila, Mexico. Journal of Vertebrate Paleontology 23(3):90A
• J. I. Kirkland and M. C. Aguillón-Martínez. 2002. Schizorhiza: a unique sawfish paradigm from the Difunta Group, Coahuila, Mexico. Revista Mexicana de Ciencias Geológicas 19(1):16-24
• R. A. Rodriguez-de la Rosa and S. R. S. Cevallos-Ferriz. 1998. Vertebrates of the El Pelillal locality (Campanian, Cerro del Pueblo Formation), southeastern Coahuila, Mexico. Journal of Vertebrate Paleontology 18(4):751-764
• R. Hernández-Rivera. 1997. Mexican dinosaurs. In P. J. Currie & K. Padian (ed.), Encyclopedia of Dinosaurs 433-437
• R. A. Rodriguez-de la Rosa and S. R. S. Cevallos-Ferriz. 1994. Upper Cretaceous Zingiberalean fruits with in situ seeds from Southeastern Coahuila, Mexico. International Journal of Plant Sciences 155(6):786-805
• R. Hernández and J. I. Kirkland. 1993. The rediscovery of a rich uppermost Campanian dinosaur locality in the Cerro del Pueblo Fm., Coahuila, Mexico. Journal of Vertebrate Paleontology 13(3, suppl.):41A
• G. E. Murray, D. R. Boyd, J. A. Wolleben and J. A. Wilson. 1960. Late Cretaceous fossil locality, eastern Parras Basin, Coahuila, Mexico. Journal of Paleontology 34(2):368-370