Los Blanquitos Formation

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Los Blanquitos Formation
Stratigraphic range: Late Campanian - Early Maastrichtian
~72  Ma [1]
O
S
D
C
P
T
J
K
Pg
N
Type Geological formation
Unit of Salta Group
Underlies Lecho Formation
Overlies Las Curtiembres Formation
Lithology
Primary Sandstone
Location
Coordinates 24°18′S65°18′W / 24.3°S 65.3°W / -24.3; -65.3
Approximate paleocoordinates 27°36′S47°30′W / 27.6°S 47.5°W / -27.6; -47.5
Region Salta Province
CountryArgentina
Extent Salta Basin
Relief Map of Argentina.jpg
Lightgreen pog.svg
Los Blanquitos Formation (Argentina)

The Los Blanquitos Formation is a geological formation in Salta Province, Argentina whose strata date back to the late Campanian to early Maastrichtian age of the Late Cretaceous Period. Dinosaur remains are among the fossils that have been recovered from the formation. [2] The formation consists of friable, micaceous, grayish-red sandstones with quartz pebbles containing 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). [3]

Contents

Vertebrate paleofauna

See also

References

  1. Novas, F.E.; Agnolín (2004 (2004). "Unquillosaurus ceibalii Powell, a giant maniraptoran (Dinosauria, Theropoda) from the Late Cretaceous of Argentina". Revista del Museo Argentino de Ciencias Naturales. 6 (1): 61–66. doi: 10.22179/REVMACN.6.73 .{{cite journal}}: CS1 maint: numeric names: authors list (link)
  2. 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.
  3. 1 2 3 Arroyo El Morterito at Fossilworks.org
  4. 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. 41 (4): e2002348. doi:10.1080/02724634.2021.2002348. S2CID   246766133.
  5. "Table 10.1," in Weishampel, et al. (2004). Page 199.
  6. 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. Bibcode:2012JSPal..10..211C. doi:10.1080/14772019.2011.630927. ISSN   1477-2019. S2CID   85354215.

Further reading