What is herrerasauridae?

Herrerasauridae

Herrerasaurids are among the oldest known dinosaurs, appearing in the fossil record 231.4 million years ago (Late Triassic). They became extinct by the end of the Triassic period. Herrerasaurids were small-sized (not more than 4 metres (13 ft) long) carnivorous theropods or basal saurischians. The best known representatives of this group are from South America (Brazil, Argentina), where they were first discovered in the 1960s. A nearly complete skeleton of Herrerasaurus ischigulastensis was discovered in the Ischigualasto Formation in San Juan, Argentina, in 1988. Less complete herrerasaurids have been found in North America, and they may have inhabited other continents as well.

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Some articles on herrerasauridae:

Staurikosaurus - Classification - Related Genera
... Staurikosaurus was placed in the clade Herrerasauridae by Benedetto in 1973 ... Herrerasauridae also includes Herrerasaurus ischigualastensis and Eoraptor lunesis, both small predatory animals that were either dinosaurs or precursors to dinosaurs ... Some phylogenetic analyses excluded Eoraptor from the Herrerasauridae Phylogenetic analysis by Sues, Nesbitt, Berman and Henrici, in 2011, exclude Eoraptor, and include Chindesaurus along with ...
Herrerasauridae - Classification - Phylogeny
... Dinosauria Ornithischia Saurischia Herrerasauridae Herrerasaurus Staurikosaurus Unnamed herrerasaurid Eusaurischia Theropoda Chindesaurus Tawa ...