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La Cruz Formation, Argentina

Coordinates: 32°30′S 67°00′W / 32.5°S 67.0°W / -32.5; -67.0
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La Cruz Formation
Stratigraphic range: Aptian
TypeGeological formation
Unit ofEl Gigante Group
UnderliesLagarcito Formation
OverliesEl Toscal Formation
Lithology
PrimarySandstone
OtherConglomerate
Location
Coordinates32°30′S 67°00′W / 32.5°S 67.0°W / -32.5; -67.0
Approximate paleocoordinates33°18′S 34°00′W / 33.3°S 34.0°W / -33.3; -34.0
RegionSan Luis Province
CountryArgentina
ExtentMarayes-El Carrizal Basin
La Cruz Formation, Argentina is located in Argentina
La Cruz Formation, Argentina
La Cruz Formation, Argentina (Argentina)

The La Cruz Formation is an Aptian geologic formation in Argentina. Pterosaur fossils of Pterodaustro guinazui and Puntanipterus globosus and fish fossils of Austrolepidotes cuyanus, Pleuropholidae indet and Neosemionotus puntanus have been recovered from the formation.[1] The formation, the uppermost unit of the El Gigante Group, overlies the El Toscal Formation, and is overlain by the Lagarcito Formation. The unit comprises sandstones and conglomerates, deposited in an alluvial plain to fluvial environment.[2]

See also

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References

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  1. ^ Hualtarán at Fossilworks.org
  2. ^ Gardini et al., 2009, p.554

Bibliography

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  • 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

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  • J. F. Bonaparte and T. M. Sánchez. 1975. Restos de un pterosaurio, Puntanipterus globosus de la Formación La Cruz, Provincia de San Luis, Argentina [Remains of a pterosaur, Puntanipterus globosus from the La Cruz Formation, San Luis Province, Argentina]. Actas del Primer Congreso Argentino de Paleontologia y Bioestratigrafia, Tucumán 2:105-113