What are sanjuansaurus?

Some articles on sanjuansaurus:

Staurikosaurus - Classification - Related Genera
... Sanjuansaurus was assigned to Herrerasauridae by Alcober and Martínez (2010) ... Other proposed members of the clade have included Sanjuansaurus from the same Ischigualasto Formation of Argentina as Herrerasaurus, and possibly ... Alcober and Martinez (2010) concluded that Staurikosaurus and Sanjuansaurus are closely related based similarities in their pubis and tibia ...