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.[1] In outcrops of the Zapata Formation near Torres del Paine, the ichthyosaur genus Myobradypterygius has been found.[2][3]
Fossil content
[edit]Color key
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Notes Uncertain or tentative taxa are in small text; |
Ichthyosaurs
[edit]| Ichthyosaurs of the Zapata Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Myobradypterygius[4] | M. hauthali | A ophthalmosaurid ichthyosaur | ||||
References
[edit]- ^ 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.
Bibliography
[edit]- 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
Further reading
[edit]- M. R. Schultz, A. Fildani, and M. Suarez. 2003. Occurrence of the southernmost South American ichthyosaur (Middle Jurassic), Parque Nacional Torres del Paine, Patagonia, southernmost Chile. Palaios 18:69-73
