8701 consists of a skull (measuring 525 mm), and is nearly complete. Dong claimed that animal was about long. It has been assigned now to Sinosaurus, but the specimen still lacks sufficient description and preparation. Over the years, paleontologists referred additional specimens to D. sinensis which are now assigned to Sinosaurus. Dong (2003) referred specimen LDM-LCA10 which consists of a skull and an incomplete skeleton. In 2012, Xing referred two individuals, ZLJ0003 which consists of a partial skull and an incomplete skeleton, and ZLJT01 which is a juvenile individual that consists of a premaxillary fragment, an incomplete maxilla, a maxillary fragment, a lacrimal, both frontals, both parietals, an incomplete braincase, an incomplete dentary, an atlantal intercentrum, two dorsal rib fragments, and a partial proximal caudal neural arch, to Sinosaurus. In 2012, a new specimen of Sinosaurus was described, and was found to represent a new species. The species Shuangbaisaurus anlongbaoensis, discovered and named in 2017, has also been considered a synonym of Sinosaurus triassicus. Description Sinosaurus was a relatively large theropod during the Early Jurassic, reaching in length and in body mass. According to Carrano et al. (2012) D. sinensis, now considered to be at least congeneric with Sinosaurus triassicus, can be distinguished based on the fact that a vertical groove is present on the lateral premaxilla adjacent to contact with the maxilla. Sinosaurus is the only "dilophosaurid" known from a complete braincase. Cryolophosaurus, Dilophosaurus, Zupaysaurus and Coelophysis kayentakatae are all known from partial braincases. Two partial braincases were found before 2012, and are probably mostly complete, except that large sections are obscured by sediments. In 2011, an exceptionally well-preserved braincase was found, only missing the frontal bones and orbitosphenoid. Classification Originally thought to be a coelophysoid related to Dilophosaurus and Cryolophosaurus, Oliver Rauhut in 2003 showed Sinosaurus to be a more advanced theropod, related to Cryolophosaurus and "Dilophosaurus" sinensis. In 2013, in an unpublished work, Carano agreed that Sinosaurus is a theropod. Sinosaurus has been considered a nomen dubium in a few works, although now that "Dilophosaurus" sinensis is referred to it, it is considered valid. Dilophosaurus sinensis was shown to be a junior synonym of Sinosaurus in 2003. It is possibly closer to the Antarctic theropod Cryolophosaurus, based on the fact that the anterior end of the jugal does not participate in the internal antorbital fenestra and that the maxillary tooth row is completely in front of the