Paleontologists in China have unearthed a relatively complete skull and vertebrae that belonged to a previously unknown metriacanthosaurid theropod dinosaur from the Middle Jurassic period. Cranium of Yuanmouraptor jinshajiangensis. Image credit: Zou et al., doi: 10.7717/peerj.19218. Yuanmouraptor jinshajiangensis roamed our planet approximately 170 million years ago (Middle Jurassic). This dinosaur was a medium-sized member of the Metriacanthosauridae,...
