La Casita Formation Explained

La Casita Formation
Type:	Formation
Period:	Late Jurassic
Prilithology:	Siltstone
Otherlithology:	Shale
Country:	Mexico
Underlies:	Taraises Formation
Overlies:	Zuloaga Formation
Thickness:	Around 60 metres

The La Casita Formation is a geologic formation in Mexico. It preserves fossils dating back to the Kimmeridgian to lowermost Berriasian.^{[1] [2]} It is laterally equivalent to the La Caja Formation^[3] and the Pimienta Formation. The ichthyosaurs Jabalisaurus^[4] and Acuetzpalin are known from the formation,^[5] as well as the metriorhynchid Dakosaurus^[6] and indeterminate pliosaurs.^[7]

See also

• List of fossiliferous stratigraphic units in Mexico

References

• Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 17 December 2021.

Notes and References

1. Zell, P., Stinnesbeck, W.. 2016. Salinites grossicostatum (Imlay, 1939) and S. finicostatum sp. nov. from the latest Tithonian (Late Jurassic) of northeastern Mexico.. Boletín de la Sociedad Geológica Mexicana. 68. 2. 305–311. 10.18268/BSGM2016v68n2a8. free.
2. Ocampo-Díaz., Yam Zul Ernesto. 2014. Procedencia de la Formación La Casita y la Arcosa Patula: implicaciones para la evolución tectono-magmática del NE de México entre el Carbonífero y el Jurásico.. Revista Mexicana de Ciencias Geológicas. 31. 45–63.
3. Zell. Patrick. Beckmann. Seija. Stinnesbeck. Wolfgang. 2013-12-01. Late Jurassic-earliest Cretaceous belemnites (Cephalopoda: Coleoidea) from northeastern Mexico and their palaeobiogeographic implications. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 270. 3. 325–341. 10.1127/0077-7749/2013/0374. 0077-7749.
4. Barrientos-Lara . J. I. . Alvarado-Ortega . J. . 2021 . A new ophthalmosaurid (Ichthyosauria) from the Upper Kimmeridgian deposits of the La Casita formation, near Gómez Farías, Coahuila, northern Mexico . Journal of South American Earth Sciences . 111 . Article 103499 . 10.1016/j.jsames.2021.103499 . 2021JSAES.11103499B .
5. Barrientos-Lara. Jair Israel. Alvarado-Ortega. Jesús. March 2020. Acuetzpalin carranzai gen et sp. nov. A new ophthalmosauridae (Ichthyosauria) from the Upper Jurassic of Durango, North Mexico. Journal of South American Earth Sciences. en. 98. 102456. 10.1016/j.jsames.2019.102456. 2020JSAES..9802456B. 213102661.
6. M.-C. Buchy, W. Stinnesbeck, E. Frey and A. H. Gonzalez Gonzalez. 2007. Première mention du genre Dakosaurus (Crocodyliformes, Thalattosuchia) dans le Jurassique supérieur du Mexique. Bulletin de la Société Géologique de France 178(5):391-397
7. M.-C. Buchy, E. Frey, W. Stinnesback and J. G. Lopez-Oliva. 2006. An annotated catalogue of the Upper Jurassic (Kimmeridgian and Tithonian) marine reptiles in the collections of the Universidad Autonoma de Nuevo Leon, Facultad de Ciencias de la Tierra, Linares, Mexico. Oryctos 6:1-18