Chromogisaurus

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Chromogisaurus
Temporal range: Late Triassic, 230 Ma
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Order: Saurischia
Suborder: Sauropodomorpha
Family: Guaibasauridae
Genus: Chromogisaurus
Ezcurra, 2010
Species: C. novasi
Binomial name
Chromogisaurus novasi
Ezcurra, 2010

Chromogisaurus is a sauropodomorph which existed in Argentina during the late Triassic period. It was a herbivore about 2 metres (6 ft 7 in) in length, and was optionally quadrupedal.[1]

Chromogisaurus was first named by Martín Daniel Ezcurra in 2010, and the type species is Chromogisaurus novasi. The generic name is derived from Greek chroma, "colour", and , "earth", a reference to the Valle Pintado, the "Painted Valley". The specific name honours Fernando Emilio Novas. The holotype, PVSJ 846, was found in a layer of the Ischigualasto Formation dating from the Carnian. This makes Chromogisaurus one of the oldest known dinosaurs. The specimen consists of a partial skeleton lacking the skull, with elements of the front and hind limbs, as well as the pelvis and two caudal vertebrae.[1]

A cladistic analysis by Ezcurra indicated that Chromogisaurus was a member of a clade basal sauropodomorphs, the Guaibasauridae, together with Guaibasaurus, the disputed Agnosphitys, Panphagia and Saturnalia. Within Guaibasauridae, it forms a smaller clade with its sister taxon Saturnalia, the Saturnaliinae.[1]

References[edit]

  1. ^ a b c Ezcurra, M. D. 2010. "A new early dinosaur (Saurischia: Sauropodomorpha) from the Late Triassic of Argentina: a reassessment of dinosaur origin and phylogeny." Journal of Systematic Palaeontology 8: 371-425.