Pisanosaurus

Pisanosaurus Temporal range: Late Triassic ~229 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Reconstruction of the skull, white bones are known, light grey bones were known from heavily eroded impressions
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Ornithodira
Clade:	Dinosauromorpha
Genus:	†Pisanosaurus Casamiquela, 1967
Species:	†P. mertii
Binomial name
†Pisanosaurus mertii Casamiquela, 1967

Pisanosaurus (/pɪsænəˈsɔːrəs/) is an extinct genus of early dinosauriform, likely an ornithischian or silesaurid, from the Late Triassic of Argentina. It was a small, lightly built, ground-dwelling herbivore, that could grow up to an estimated 1 m (3.3 ft) long. Only one species, the type, Pisanosaurus mertii, is known, based on a single partial skeleton discovered in the Ischigualasto Formation of the Ischigualasto-Villa Unión Basin in northwestern Argentina. This part of the formation has been dated to the late Carnian, approximately 229 million years ago.^[1]