La Caja Formation
Stratigraphic range:
TypeFormation
UnderliesTaraises Formation
OverliesZuloaga Formation
ThicknessAround 60 metres
Lithology
PrimaryMarl
OtherLimestone, Siltstone, Sandstone, Shale
Location
Country Mexico

The La Caja Formation is a geologic formation in Mexico. It preserves fossils dating from the Kimmeridgian to the lower Berriasian.[1] La Caja Formation is widespread in northeastern and central Mexico and known for their abundant and diverse well-preserved ammonites. It was deposited in hemipelagic conditions, and predominantly consists of siliclastic sediments, including marl, with limestone.[2] It is laterally equivalent to the La Casita Formation, which represent more proximal facies.[3] The ichthyosaurs Ophthalmosaurus icenicus[4] and Parrassaurus yacahuitztli[5], metriorhynchid Cricosaurus saltillensis[6] and the giant pliosaur "Monster of Aramberri"[7] are known from the formation.

See also

References

Notes
  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. doi:10.18268/BSGM2016v68n2a8.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. ↑ Zell,P., Stinnesbeck, W., Beckmann,S. (2016). "Late Jurassic aptychi from the La Caja Formation of northeastern Mexico". Boletín de la Sociedad Geológica Mexicana. 68 (3): 515–536. doi:10.18268/BSGM2016v68n3a8.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  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. doi:10.1127/0077-7749/2013/0374. ISSN 0077-7749.
  4. ↑ Buchy, Marie-Céline (January 2010). "First record of Ophthalmosaurus (Reptilia: Ichthyosauria) from the Tithonian (Upper Jurassic) of Mexico". Journal of Paleontology. 84 (1): 149–155. doi:10.1666/08-122.1. ISSN 0022-3360. S2CID 130871980.
  5. ↑ Barrientos-Lara, J. I.; Alvarado-Ortega, J. (2021). "A new Tithonian ophthalmosaurid ichthyosaur from Coahuila in northeastern Mexico". Alcheringa: An Australasian Journal of Palaeontology. in press. doi:10.1080/03115518.2021.1922755.
  6. ↑ Buchy, Marie-Céline; Vignaud, Patrick; Frey, Eberhard; Stinnesbeck, Wolfgang; González, Arturo H. González (September 2006). "A new thalattosuchian crocodyliform from the Tithonian (Upper Jurassic) of northeastern Mexico". Comptes Rendus Palevol. 5 (6): 785–794. doi:10.1016/j.crpv.2006.03.003. ISSN 1631-0683.
  7. ↑ Buchy, Marie-Céline; Frey, Eberhard; Stinnesbeck, Wolfgang; López-Oliva, José Guadalupe (2003-05-01). "First occurrence of a gigantic pliosaurid plesiosaur in the late Jurassic (Kimmeridgian) of Mexico" (PDF). Bulletin de la Société Géologique de France. 174 (3): 271–278. doi:10.2113/174.3.271. hdl:2042/260. ISSN 1777-5817.
Sources


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