Shuvosauridae
Shuvosauridae is an extinct family of theropod-like pseudosuchian within the clade Poposauroidea. Shuvosaurids existed in North and South America during the Late Triassic period. Shuvosauridae was named by Sankar Chatterjee in 1993 to include the genus Shuvosaurus.
In a 2007 study Chatterjeea was demonstrated to be a junior synonym of Shuvosaurus, and the therein cladistic analysis found that Shuvosaurus, Effigia and Sillosuchus all form a closely related group. However, this group was left nameless, and simply referred to as Group Y. However, in accordance with ICZN rules of naming priority Shuvosauridae has priority over Chatterjeeidae. In 2011, Sterling J. Nesbitt proposed a new definition to this clade: "The least inclusive clade containing Shuvosaurus inexpectatus Chatterjee, 1993, and Sillosuchus longicervix Alcober and Parrish, 1997".
