Los Blanquitos Formation

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Los Blanquitos Formation
Stratigraphic range: Campanian
~84–71 Ma
TypeGeological formation
Unit of
UnderliesLecho Formation
Overlies
Lithology
PrimarySandstone
Location
Coordinates24°18′S 65°18′W / 24.3°S 65.3°W / -24.3; -65.3Coordinates: 24°18′S 65°18′W / 24.3°S 65.3°W / -24.3; -65.3
Approximate paleocoordinates27°36′S 47°30′W / 27.6°S 47.5°W / -27.6; -47.5
RegionSalta Province
Country Argentina
ExtentSalta Basin
Los Blanquitos Formation is located in Argentina
Los Blanquitos Formation
Los Blanquitos Formation (Argentina)

The Los Blanquitos Formation is a geological formation in Salta Province, Argentina whose strata date back to the Campanian. Dinosaur remains are among the fossils that have been recovered from the formation.[1] The formation comprises friable, micaceous, grayish-red sandstones with quartz pebbles furrowed with small carbonate veins. In the base of this layer the remains of a titanosaurid dinosaur were discovered. Above the layer with bones appears a lens of thick, greenish-gray, calcareous, very hard sandstone with pebbles and gravel. The bones were covered by a "halo" of the same rock but of greenish or grayish color, especially visible because the normal sediment is red. The bed thickness is 1.5 metres (4.9 ft).[2]

Vertebrate paleofauna[]

See also[]

  • List of dinosaur-bearing rock formations

References[]

  1. ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 600-604. ISBN 0-520-24209-2.
  2. ^ a b c Arroyo El Morterito at Fossilworks.org
  3. ^ Agnolín FL, Cerroni MA, Scanferla A, Goswami A, Paulina-Carabajal A, Halliday T, Cuff AR, Reuil S (2022). "First definitive abelisaurid theropod from the Late Cretaceous of Northwestern Argentina". Journal of Vertebrate Paleontology. in press: e2002348. doi:10.1080/02724634.2021.2002348.
  4. ^ "Table 10.1," in Weishampel, et al. (2004). Page 199.
  5. ^ Carrano, Matthew T.; Benson, Roger B. J.; Sampson, Scott D. (2012-06-01). "The phylogeny of Tetanurae (Dinosauria: Theropoda)". Journal of Systematic Palaeontology. 10 (2): 211–300. doi:10.1080/14772019.2011.630927. ISSN 1477-2019.

Further reading[]

  • J.F. Bonaparte and G. Bossi. 1967. Sobre la presencia de dinosaurios en la Formación Pirgua del Grupo Salta y su significado cronologico [On the presence of dinosaurs in the Pirgua Formation of the Salta Group and its chronologic significance]. Acta Geologica Lilloana 9:25-44
  • Powell, J.E. 2003. Revision of South American titanosaurid dinosaurs: palaeobiological, palaeobiogeographical and phylogenetic aspects. Records of the Queen Victoria Museum Launceston 111:1-173
  • Powell, J.E. 1979. Sobre una asociacion de dinosaurios y otras evidencias de vertebrados del Cretacico superior de la region de La Candelaria, Prov. de Salta, Argentina. Ameghiniana 16: pp. 191–204
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