Sinosaurus triassicus (Young 1948; IVPP V34, LFKL 004,KMV 8701; 5.6m; Early Jurassic) nests with S. sinensis as a dual-crested theropod. Young named Sinosaurus triassicus based on three incomplete
jaw fragments and three isolated teeth. Hu studied an almost complete skeleton and named it as a new species of Dilophosaurus, D. sinensis, based on the nasolacrimal crest developed over the dorsal region of the skull. Zhang et al described LFKL 004, an almost complete skull with the mandible and eleven cervical vertebrae.
The primary diagnostic features include
(1) the vertical crest developed dorsoventrally from the ventral portion of the maxilla to the nasal
crest;
(2) ventral border of the antorbital fenestra formed mostly by
the anterior process of the jugal, taking more than half of the total
length; and (3) the fenestra between the nasal, lacrimal and the
prefrontal.
Sinosaurus sinensis originally Dilophosaurus sinensis (Hu 1993; Early Jurassic; skull length 5.25cm; 5.6m length; KMV 8701, LFKL-004).
Not related to Dilophosaurus wetherelli, |
