Lago Colhué Huapí Formation

The Lago Colhué Huapí Formation is a Late Cretaceous geologic formation of the Chubut Group in the Golfo San Jorge Basin in Patagonia, Argentina. The formation, named after Lake Colhué Huapí, is overlain by the Salamanca Formation of the Río Chico Group and in some areas by the Laguna Palacios Formation.[1]

Lago Colhué Huapí Formation
Stratigraphic range: Campanian-Maastrichtian
~80–66 Ma
TypeGeological formation
Unit ofChubut Group
UnderliesLaguna Palacios Formation and Río Chico Group (Salamanca Formation)
OverliesBajo Barreal Formation
Lithology
PrimaryTuff
OtherSandstone
Location
Coordinates45°36′S 68°30′W / 45.6°S 68.5°W / -45.6; -68.5
Approximate paleocoordinates48°12′S 55°12′W / 48.2°S 55.2°W / -48.2; -55.2
RegionCentral Patagonia
CountryArgentina
ExtentGolfo San Jorge Basin
Type section
Named forLake Colhué Huapí
Lago Colhué Huapí Formation is located in Argentina
Lago Colhué Huapí Formation
Lago Colhué Huapí Formation (Argentina)

The strata of the Lago Colhué Huapé Formation were thought to pertain to the Bajo Barreal Formation, but are now recognized as a distinct stratigraphic unit in their own right.[1][2]

Vertebrate paleofauna

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Taxa recovered from the Lago Colhué Huapí Formation include the sauropods Aeolosaurus, and Argyrosaurus, as well as the hadrosaurid Secernosaurus and the probable elasmarian ornithopod Sektensaurus.[3][4][5] The dubious possible ceratopsian Notoceratops was also present. The apex predator was an unnamed megaraptorid.[1]

See also

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References

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  1. ^ a b c Casal et al., 2015
  2. ^ Clyde et al., 2014
  3. ^ Martínez et al., 2016
  4. ^ Casal et al., 2007
  5. ^ Mannion & Otero, 2012

Bibliography

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