Rio Neuquen Formation - AbsoluteAstronomy.com

The Rio Neuquen Formation is a geological formation in Neuquen, Argentina whose strata date back to the Late Cretaceous

Late Cretaceous

The Late Cretaceous is the younger of two epochs into which the Cretaceous period is divided in the geologic timescale. Rock strata from this epoch form the Upper Cretaceous series...

. Dinosaur remains are among the fossils that have been recovered from the formation.

Vertebrate paleofauna

Dinosaur Dinosaur Dinosaurs are a diverse group of animals of the clade and superorder Dinosauria. They were the dominant terrestrial vertebrates for over 160 million years, from the late Triassic period until the end of the Cretaceous , when the Cretaceous–Paleogene extinction event led to the extinction of... s reported from the Rio Neuquen Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Antarctosaurus Antarctosaurus Antarctosaurus is a genus of titanosaurian sauropod dinosaur from the Late Cretaceous Period of what is now South America. The type species, A. wichmannianus, was described by prolific German paleontologist Friedrich von Huene in 1929, who also described a second species in 1929. Three additional...	A. giganteus			"[Two] femora, pubis."	Rio Neuquen remains previously referred to A. giganteus are now attributed to some indeterminate sauropod.
	A. wichmannianus
Megaraptor Megaraptor Megaraptor is a genus of large theropod dinosaur that lived in the Coniacian stage of the Late Cretaceous. Its fossils have been discovered in the Patagonian region of Argentina...	M. namunhuaiquii			"Partial forelimb, manus, and pes."
Patagonykus Patagonykus Patagonykus is a genus of theropod dinosaur from the Upper Cretaceous of Argentina. This alvarezsaur was discovered in exposures of the Portezuelo Member of the Rio Neuquen Formation in the Neuquen Province of Argentina...	P. puertai			"Partial postcranial skeleton."
Rinconsaurus Rinconsaurus Rinconsaurus is a genus of dinosaur from the Late Cretaceous. It was a titanosaurid sauropod which lived in what is now Argentina. The type species, Rinconsaurus caudamirus, was described by Calvo and Riga in 2003, and is based on three partial skeletons.-Description:Like all sauropods,...	R. cadamirus
Titanosaurus Titanosaurus Titanosaurus is a genus of sauropod dinosaur, first described by Lydekker in 1877. It is known from the Maastrichtian Lameta Formation of India...	Indeterminate				Titanosaurus is now considered a nomen dubium Nomen dubium In zoological nomenclature, a nomen dubium is a scientific name that is of unknown or doubtful application... .
Unenlagia Unenlagia Unenlagia is a genus of, possibly dromaeosaurid, theropod dinosaur from the Late Cretaceous of Argentina....	U. comahuensis			"Fragmentary postcrania."

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