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]
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
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
References
^
a
b
c Casal et al. , 2015
^ Clyde et al. , 2014
^ Martínez et al. , 2016
^ Casal et al. , 2007
^ Mannion & Otero, 2012
Bibliography
Casal, Gabriel A.; Allard, José O.; Foix, Nicolás (2015),
"Análisis estratigráfico y paleontológico del Cretácico Superior en la Cuenca del Golfo San Jorge: Nueva unidad litoestratigráfica para el Grupo Chubut" ,
Revista de la Asociación Geológica Argentina , 72 : 77–95, retrieved 2019-02-16
Casal, G.; Martínez, R.D.; Luna, M.; Sciutto, J. C.; Lamanna, M. (2007),
"Aeolosaurus colhuehuapensis sp. nov. (Sauropoda, Titanosauria) de la Formación Bajo Barreal, Cretácico Superior de Argentina" [Aeolosaurus colhuehuapensis sp. nov. (Sauropoda, Titanosauria) from the Bajo Barreal Formation, Upper Cretaceous of Argentina],
Revista Brasileira de Paleontologia , 10 (1): 53–62,
doi :
10.4072/rbp.2007.1.05 , retrieved 2019-02-23
Clyde, W.C.; Wilf, P.; Slingerland, Iglesias A.; Barnum, T.; Bijl, P.K. (2014),
"New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: implications for Cretaceous—Paleogene extinction recovery and land mammal age correlations" ,
Geological Society of America Bulletin , 126 (3–4): 289–306,
doi :
10.1130/B30915.1 , retrieved 2019-02-23
Cortés, José María (1986),
Estratigrafía y tectónica de la región central de la Provincia de Chubut, República Argentina (PhD thesis) (PDF) ,
Universidad de Buenos Aires , pp. 1–242, retrieved 2019-02-16
Mannion, P.D.; Otero, A. (2012),
"A reappraisal of the Late Cretaceous Argentinean sauropod dinosaur Argyrosaurus superbus , with a description of a new titanosaur genus" ,
Journal of Vertebrate Paleontology , 32 (3): 614–638,
doi :
10.1080/02724634.2012.660898 ,
hdl :
11336/197194 , retrieved 2019-02-23
Martínez, R.D.F.; Lamanna, M.C.;
Novas, F.E. ; Ridgely, R.C.; Casal, G.A.; Martínez, J.E. (2016), "A Basal Lithostrotian Titanosaur (Dinosauria: Sauropoda) with a Complete Skull: Implications for the Evolution and Paleobiology of Titanosauria",
PLoS ONE , 11 (4): e0151661,
doi :
10.1371/journal.pone.0151661 ,
PMC
4846048 ,
PMID
27115989
Weishampel, David B. ;
Dodson, Peter ;
Osmólska, Halszka (2004),
The Dinosauria, 2nd edition , Berkeley: University of California Press, pp. 1–880,
ISBN
0-520-24209-2 , retrieved 2019-02-21