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.Gardini et al., 2009, p.554 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.Loma del Pterodaustro fossil site at Fossilworks.org
Fossil content The following fossils have been found in the Lagarcito Formation:Loma del Pterodaustro at Fossilworks.org
Austrolepidotus cuyanus Lepidotes pusillus Neosemionotus puntanus Pterodaustro guinazui Treptichnus pollardi Zurupleuropholis quijadensis Cyzicus aff. codoensis Darwinula sp. Copytus sp. Bisulcocypris sp. Candonopsis sp. Anura indet. Magnoliophyta indet. Trichoptera indet.
See also List of pterosaur-bearing stratigraphic units
References
Bibliography
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