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)
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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.^[1] In outcrops of the Zapata Formation near Torres del Paine, the ichthyosaur genus Myobradypterygius has been found.^[2]^[3]

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^[4]	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