Zapata Formation

Zapata Formation
Zapata Formation
Stratigraphic range: Berriasian-Hauterivian
Type	Geological formation
Underlies	Punta Barrosa & Erezcano Formations
Overlies	Tobífera & Springhill Formations
Lithology
Primary	Shale
Other	Turbiditic sandstone, pyrite
Location
Coordinates	51°06′S 73°18′W / 51.1°S 73.3°W
Approximate paleocoordinates	51°18′S 36°54′W / 51.3°S 36.9°W
Region	Magallanes y la Antártica Chilena & Aysén Regions; Santa Cruz Province
Country	Chile, Argentina
Extent	Magallanes or Austral Basin
Type section
Named for	Cerro Zapata
	Zapata Formation (Argentina)

Zapata Formation (Spanish: Formación Zapata) is a sedimentary formation of Lower Cretaceous age in the Magallanes or Austral Basin of Argentina and Chile. Much of the formation is folded and faulted as consequence of the Andean orogeny. In outcrops of the Zapata Formation near Torres del Paine, the ichthyosaur genus Myobradypterygius has been found.

Fossil content

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.

Ichthyosaurs of the Zapata Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Myobradypterygius	M. hauthali				A ophthalmosaurid ichthyosaur

↑ Fildani et al., 2008
↑ Pardo Pérez et al., 2012
↑ Páramo, 2018, p.16
↑ Campos, L.; Fernández, M. S.; Bosio, V.; Herrera, Y.; Manzo, A. (2024). "Revalidation of Myobradypterygius hauthali Huene, 1927 and the phylogenetic signal within the ophthalmosaurid (Ichthyosauria) forefins". Cretaceous Research. 157. 105818. Bibcode:2024CrRes.15705818C. doi:10.1016/j.cretres.2023.105818.

Fildani, Andrea, Romans, B.W., Fosdick, J.C., Crane, W.H., and Hubbard, S.M. (2008). Orogenesis of the Patagonian Andes as reflected by basin evolution in southernmost South America, in Spencer, J.E., and Titley, S.R., eds., Ores and orogenesis: Circum-Pacific tectonics, geologic evolution, and ore deposits: Arizona Geological Society Digest 22: 259–268
Páramo Fonseca, María Eurídice (2018), "Restos apendiculares de un ictiosaurio oftalmosáurido del Barremiano inferior de Villa de Leiva, Colombia", Boletín de Geología, 40: 15–30, doi:10.18273/revbol.v40n1-2018001, retrieved 2019-02-06
Pardo Pérez, Judith; Frey, Eberhard; Stinnesbeck, Wolfgang; Fernández, Marta S.; Rivas, Luis; Salazar, Christian; Leppe, Marcelo (2012), "An ichthyosaurian forefin from the Lower Cretaceous Zapata Formation of southern Chile: implications for morphological variability within Platypterygius", Palaeobiodiversity and Palaeoenvironments, 92 (2): 287–294, Bibcode:2012PdPe...92..287P, doi:10.1007/s12549-012-0074-8, S2CID 128487253, retrieved 2016-08-30