Shaochilong (meaning "shark toothed dragon") is an extinct genus of tetanuran theropod dinosaur from the Early Cretaceous (Barremian to the Albian stage) Miaogou Formation of China, though a more restrictive suggestion from the Aptian to the Albian has been suggested based on faunal composition.
Estimated length of the femur is 61.5 cm which suggests the whole animal weighed approximately 500 kilograms (1,100 lb).
This made Shaochilong an uncharacteristically small for a carcharodontosaurid, in contrast with other members of the family, which were among the largest carnivorous animals on earth.
The taxa seemed to provide an unambiguous example of a fairly large carnosaur in Cretaceous Asia at the time of its description, and was considered the youngest known Laurasian allosauroid.
[1][2][3] Phylogenetic analysis performed by Brusatte and coworkers indicate that Shaochilong is deeply nested within the carcharodontosaurids, the most derived group among the allosauroids.
Shaochilong appears to be more closely related to the Gondwanan carcharodontosaurians (Tyrannotitan, Carcharodontosaurus, Mapusaurus, Giganotosaurus) than the Laurasian ones (such as Neovenator and Acrocanthosaurus).