The Lagarcito Formation is an Albian geologic formation in Argentina. Pterosaur fossils have been recovered from the formation. The formation overlies the La Cruz Formation and is overlain by the San Roque Formation. The sandstones and mudstones of the formation were deposited in a fluvial and mostly lacustrine environment.[1] The fossil association and the geological evidence indicate that the Lagarcito Formation represents a perennial shallow lake situated in an alluvial plain where detrital sedimentation and semiarid climatic conditions predominated.[2]
| Lagarcito Formation | |
|---|---|
| Stratigraphic range: Albian | |
| Type | Geological formation |
| Underlies | San Roque Formation |
| Overlies | La Cruz Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Mudstone |
| Location | |
| Coordinates | 32°30′S 67°00′W / 32.5°S 67.0°W |
| Approximate paleocoordinates | 38°00′S 38°42′W / 38.0°S 38.7°W |
| Region | San Luis Province |
| Country | Argentina |
| Extent | Marayes-El Carrizal Basin |
  Lagarcito Formation (Argentina) | |
Fossil content
editThe following fossils have been found in the Lagarcito Formation:[3]
See also
editReferences
edit- ^ Gardini et al., 2009, p.554
- ^ Loma del Pterodaustro fossil site at Fossilworks.org
- ^ Loma del Pterodaustro at Fossilworks.org
Bibliography
edit- Gardini, Carlos; Rivarola, David; Agüera, Maximiliano; Candela, Gerónimo (2009), "Estructura de la región Sierra de Guayaguas-Marayes, Provincias de San Juan y San Luis" (PDF), Revista de la Asociación Geológica Argentina, 65: 551–565, retrieved 2018-09-08
Further reading
edit- A. López-Arbarello and L. Codorniú. 2007. Semionotids (Neopterygii, Semionotiformes) from the Lower Cretaceous Lagarcito Formation, San Luis Province, Argentina. Journal of Vertebrate Paleontology 27(4):811-826