A big tooth!

Writer:Xu Xing

2009-01-01

Recently, Xu Xing and James M. CLARK had discovered a giant Theropoda dinosaur's (Sinraptoridae indet) tooth (IVPP V 15310) in Shishugou Formation (Dzungarian Basin, Xinjiang), IVPP V 15310 are a dentary tooth or the maxilla tooth.

its mesial denticle are about as long as the distal ones, but is higher than distal ones this characteristic to indicate that it belongs to sinraptorid.

IVPP V 15310 were in the Jurassic Theropoda dinosaur's tooth which reported the size has been biggest (Smith,2005; Smith et a1., 2005), size close Acrocanthosaurus, Tyrannosaurus, Carcharodontosaurus and Giganotosaurus and so on some Cretaceous Period's giant Theropoda dinosaur's tooth.