Sinornithosaurus

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Sinornithosaurus (derived from a combination of Latin and Greek, meaning 'Chinese bird-lizard') is a genus of dinosaur from the early Cretaceous (early Aptian) of the Yixian Formation in what is now China. It was the fifth non-avian 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.