Sinornithosaurus millenii as it appeared in BBC's Planet Dinosaur
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Sauropsida
Superorder: Dinosauria
Order: Saurischia
Suborder: Theropoda
Genus: Sinornithosaurus
Xu, Wang, & Wu, 1999
Species: S. millenii
Binomial name
Sinornithosaurus millenii
Xu, Wang, & Wu, 1999

Sinornithosaurus (derived from a combination of Latin and Greek, meaning 'Chinese bird-lizard') is a genus of feathered dromaeosaurid dinosaur from the early Cretaceous Period (early Aptian) of the Yixian Formation in what is now China. It was the fifth non–avian feathered dinosaur genus discovered by 1999. The original specimen was collected from the Sihetun locality of western Liaoning. It was found in the Jianshangou beds of the Yixian Formation, dated to 124.5 million years ago. Additional specimens have been found in the younger Dawangzhangzi bed, dating to around 122 million years ago. Xu Xing described Sinornithosaurus and performed a phylogenetic analysis which demonstrated that it is basal, or primitive, among the dromaeosaurs. Some paleontologists have hypothesized that Sinornithosaurus millenii had venom due to some dentitional similarities to modern venomous snakes. Lately; the possiblity that this Dinosaur species could be Venomous is highly debated.




Discovery and specimens

In the Media

  • Sinornithosaurus makes an appearance in the episode Feathered Dragons in Planet Dinosaur, where it is first shown to prey on a smaller relative, Microraptor, but fails. Sinornithosaurus is later shown to have a poisonous bite by comparing its teeth to the Gila Monster lizard. A pack of Sinornithosaurus have taken down a mother Jeholosaurus with the help of their poison, orphaning her babies.
  • It was seen in the television show Dino Dana. It apparently is shown with a purple-feathered body, whereas the real animal had orange/brown feathers.



Lately, the theory of Sinornithosaurus being venemous has been doubted, or even disapproved by the paleontologists. [[File:

Tumblr inline mm7vostcbF1qz4rgp.jpg

Community content is available under CC-BY-SA unless otherwise noted.