Neuquensaurus

Neuquensaurus Temporal range: Late Cretaceous, 80 Ma PreЄ Є O S D C P T J K Pg N ↓
Holotypic caudal vertebrae
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Dinosauria
Order:	Saurischia
Suborder:	†Sauropodomorpha
Clade:	†Neosauropoda
Clade:	†Macronaria
Clade:	†Titanosauria
Family:	†Saltasauridae
Subfamily:	†Saltasaurinae
Genus:	†Neuquensaurus Powell, 1992
Species
†N. australis (Lydekker, 1893 [originally Titanosaurus]) (type) †N. robustus (Huene, 1929 [originally Titanosaurus]) (nomen dubium)
Synonyms
Genus synonymy Microcoelus? Lydekker, 1893 Loricosaurus? von Huene, 1929 Species synonymy Microcoelus patagonicus? Lydekker, 1893 Titanosaurus nanus Lydekker, 1893 Titanosaurus australis Lydekker, 1893 Titanosaurus robustus von Huene, 1929 Loricosaurus scutatus? von Huene, 1929 Saltasaurus australis (Lydekker, 1893 [originally Titanosaurus]) Saltasaurus robustus (von Huene, 1929 [originally Titanosaurus])

Neuquensaurus (meaning "Neuquén lizard") is a genus of saltasaurid sauropod dinosaur that lived in the Late Cretaceous, about 80 million years ago in Argentina and Uruguay in South America. Its fossils were recovered from outcrops of the Anacleto Formation around Cinco Saltos, near the Neuquén river from which its name is derived.

In 1893, Richard Lydekker named Titanosaurus australis, based on a series of caudal vertebrae and limb elements. The remains had been found by Santiago Roth and F. Romero in the Neuquén Province of Argentina at the Neuquén River, and were by Lydekker assigned to a single individual. Six caudal vertebrae, with the inventory numbers MLP Ly 1-6-V-28-1, were the holotype of the species. They had probably been found in a layer of the Anacleto Formation.

Some elements that had been referred to Titanosaurus australis were reassigned to Laplatasaurus araukanicus by Friedrich von Huene in 1929. The same year, von Huene named a Titanosaurus robustus, and claimed it differed from T. australis in the limb material. Von Huene described all the slender limb material to T. australis, but did not identify any differentiating features between the vertebrae. When describing T. robustus, von Huene did not really compare other genera and species to it. From the syntype material assigned by von Huene to T. robustus José Fernando Bonaparte et al. in 1978 chose four lectotypes, specimens MLP 26-250, MLP 26-252, MLP 26-254, and MLP 26-259, a left femur, both ulnae, and a left radius.