Lagarcito Formation
Lagarcito Formation Stratigraphic range: Albian | |
---|---|
Type | Geological formation |
Underlies | |
Overlies | La Cruz Formation |
Lithology | |
Primary | Sandstone |
Other | Mudstone |
Location | |
Coordinates | 32°30′S 67°00′W / 32.5°S 67.0°WCoordinates: 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 | ![]() |
Extent | |
![]() ![]() Lagarcito Formation (Argentina) |
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 . 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]
Fossil content[]
The following fossils have been found in the Lagarcito Formation:[3]
- Lepidotes pusillus
- Pterodaustro guinazui
- Treptichnus pollardi
- Cyzicus aff. codoensis
- Darwinula sp.
- Candonopsis sp.
- Anura indet.
- Magnoliophyta indet.
- Pleuropholidae indet.
- Trichoptera indet.
See also[]
References[]
- ^ Gardini et al., 2009, p.554
- ^ Loma del Pterodaustro fossil site at Fossilworks.org
- ^ Loma del Pterodaustro at Fossilworks.org
Bibliography[]
- Estructura de la región Sierra de Guayaguas-Marayes, Provincias de San Juan y San Luis. Revista de la Asociación Geológica Argentina 65. 551–565. Accessed 2018-09-08. ; ; , and . 2009.
Further reading[]
- 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
Categories:
- Geologic formations of Argentina
- Cretaceous Argentina
- Albian Stage
- Sandstone formations
- Mudstone formations
- Fluvial deposits
- Lacustrine deposits
- Ichnofossiliferous formations
- Fossiliferous stratigraphic units of South America
- Paleontology in Argentina
- Geology of San Luis Province