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Quebrada del Barro Formation: Difference between revisions

Coordinates: 31°54′S 67°12′W / 31.9°S 67.2°W / -31.9; -67.2
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== References ==
== References ==
{{portal|Geology|Argentina|Triassic|Prehistory of South America}}
{{Portal|Geology|Argentina}}
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Revision as of 03:46, 14 July 2019

Quebrada del Barro Formation
Stratigraphic range: Norian
TypeGeological formation
Unit ofMarayes Group
UnderliesLos Riscos Formation
OverliesCarrizal Formation
Lithology
PrimarySandstone
OtherSiltstone
Location
Coordinates31°54′S 67°12′W / 31.9°S 67.2°W / -31.9; -67.2
Approximate paleocoordinates40°48′S 30°00′W / 40.8°S 30.0°W / -40.8; -30.0
RegionSan Juan Province
Country Argentina
ExtentMarayes-El Carrizal Basin
Quebrada del Barro Formation is located in Argentina
Quebrada del Barro Formation
Quebrada del Barro Formation (Argentina)

The Quebrada del Barro Formation is a geological formation of the Marayes-El Carrizal Basin in San Juan Province, Argentina. The formation underlies the Los Riscos Formation and overlies the Carrizal Formation.[1]

Its fossils date back to the Late Triassic epoch of the Triassic period.[2] Part of the formation may be made into a provincial park following the discovery of the fossils of Ingentia, a giant dinosaur.[3]

Fossil content

Dinosaurs

Theropods of the Quebrada del Barro Formation
Genus Species Material Notes Images
Lucianovenator[4] L. bonoi "Cervical vertebrae, a sacrum and a partial pelvis" A coelophysid theropod
Sauropodomorphs of the Quebrada del Barro Formation
Genus Species Material Notes Images

Ingentia[5]

I. prima

"cervical and dorsal vertebrae, scapula"

A lessemsaurid sauropod

Leyesaurus L. marayensis A massospondylid sauropodomorph
Riojasaurus[6] R. incertus "a skull, leg bones, vertebrae" A riojasaurid sauropodomorph

Dinosauromorphs

Dinosauromorphs of the Quebrada del Barro Formation
Genus Species Material Notes Images
Dromomeron[7] D. gigas a lagerpetid dinosauromorph

Rhynchocephalians

Rhynchocephalians of the Quebrada del Barro Formation
Genus Species Material Notes Images
Sphenotitan[8] S. leyesi "skull, maxilla, dorsal vertebrae, sacral vertebrae, caudal vertebra" a opisthodont sphenodontian

References

  1. ^ Gardini et al., 2009, p.554
  2. ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Triassic, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 527–528. ISBN 0-520-24209-2.
  3. ^ "Uac wants a provincial park in the cradle of Ingenia Prima". Naaju. Retrieved 2018-07-15.
  4. ^ Ricardo N. Martínez; Cecilia Apaldetti (2017). "A late Norian-Rhaetian coelophysid neotheropod (Dinosauria, Saurischia) from the Quebrada del Barro Formation, northwestern Argentina". Ameghiniana. in press. doi:10.5710/AMGH.09.04.2017.3065.
  5. ^ Apaldetti; Martínez, Ricardo N.; Cerda, Ignatio A.; Pol, Diego; Alcober, Oscar (2018). "An early trend towards gigantism in Triassic sauropodomorph dinosaurs". Nature Ecology & Evolution. 2 (8): 1227–1232. doi:10.1038/s41559-018-0599-y. PMID 29988169.
  6. ^ "Riojasaurus." In: Dodson, Peter & Britt, Brooks & Carpenter, Kenneth & Forster, Catherine A. & Gillette, David D. & Norell, Mark A. & Olshevsky, George & Parrish, J. Michael & Weishampel, David B. The Age of Dinosaurs. Publications International, LTD. p. 41. ISBN 0-7853-0443-6.
  7. ^ Ricardo N. Martínez; Cecilia Apaldetti; Gustavo A. Correa; Diego Abelín (2016). "A Norian lagerpetid dinosauromorph from the Quebrada del Barro Formation, northwestern Argentina". Ameghiniana. 53 (1): 1–13. doi:10.5710/AMGH.21.06.2015.2894.
  8. ^ Martinez, R. N.; Apaldetti, C.; Colombi, C. E.; Praderio, A.; Fernandez, E.; Malnis, P. S.; Correa, G. A.; Abelin, D.; Alcober, O. (2013). "A new sphenodontian (Lepidosauria: Rhynchocephalia) from the Late Triassic of Argentina and the early origin of the herbivore opisthodontians". Proceedings of the Royal Society B: Biological Sciences. 280 (1772): 20132057. doi:10.1098/rspb.2013.2057. PMC 3813332. PMID 24132307.

Bibliography