The Cerro Carnerero Formation is a geological formation of the Golfo San Jorge Basin in Chubut Province, Patagonia, Argentina.Cañadón Puelman at Fossilworks.org
Description The claystones and tuffs of the approximately thick formation,Cortés, 1986, p.50 belonging to the Lonco Trapial Group,Cortés, 1986, p.49 were deposited in a fluvial environment.Cortés, 1986, p.53
The formation dates back to the Middle Jurassic (Toarcian stage) and has preserved fossils of Cladophlebis oblonga,Cortés, 1986, p.52 and Amygdalodon patagonicus.Weishampel et al., 2004, p.542
The fossiliferous beds rest on Liassic beds with Harpoceras subplanatum, and below the Middle to Upper Jurassic Porphyritic Series. Called the "Cerro Carnerero" beds, Rauhut, 2008, assigned the Cerro Carnerero to the Toarcian to Bajocian.
Lithology The formation comprises sandy tuffs and bluish gray claystones, which form part of a continental sedimentary series mixed with porphyritic conglomerates with partly encrusted round pebbles, and bluish gray clays with sandy intercalations and clays in lesser amounts.
Fossil content Vertebrate fauna Dinosaurs Taxa Presence Notes Images Genus: Amygdalodon A. patagonicus Chubut Province "Partial skeleton""Table 13.1," in Weishampel et al., 2004, p.263
Arthropods Estheria sp.Cañadón Puelman, East Slope, Sierra Pampa de Agnía at Fossilworks.org
See also List of dinosaur-bearing rock formations Cañadón Asfalto Formation Posidonia Shale
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