A new carcharodontosaurian theropod (Dinosauria: Saurischia) from the Lower Cretaceous of Thailand.

ABSTRACT: The isolated fossil remains of an allosauroid theropod from the Lower Cretaceous Khok Kruat Formation of Khorat, Thailand, are described in this study. Detailed observations support the establishment of a new allosauroid, Siamraptor suwati gen. et sp. nov. This new taxon is based on a composite cranial and postcranial skeleton comprising premaxilla, maxilla, jugal, surangular, prearticular, articular, vertebrae, manual ungual, ischium, tibia, and pedal phalanx. It is distinguished from other allosauroids by characters such as a jugal with straight ventral margin and dorsoventrally deep anterior process below the orbit, a surangular with a deep oval concavity at the posterior end of the lateral shelf and four posterior surangular foramina, a long and narrow groove along the suture between t

SUBMITTER: Chokchaloemwong D 

PROVIDER: S-EPMC6784982 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature