Sinraptor

Filed under Jurassic dinosaurs · Types of Dinosaurs editorial team

Order: Saurischia · Suborder: Theropoda · Infraorder: Carnosauria · Family: Metriacanthosauridae (family not firmly confirmed)

Sinraptor was a large predatory dinosaur that roamed Asia during the Late Jurassic period. Its name, meaning "Chinese thief," reflects its origin in fossil deposits from China. Despite the "raptor" in its name, Sinraptor was not closely related to the small, agile raptor dinosaurs known from later periods. Instead, it belonged to a group called the Metriacanthosauridae and was a robust, big-headed carnivore that could reach lengths of 23 to 25 feet. As an apex predator of its time, Sinraptor hunted the plant-eating dinosaurs that shared its Jurassic environment.

Paleontologists have gained valuable insights into Sinraptor's behavior from well-preserved fossil material. One remarkable specimen bears bite marks on its skull that match the teeth of another Sinraptor, suggesting that members of the species engaged in face-biting behavior—possibly during dominance contests or feeding disputes. Such evidence offers a rare glimpse into the social interactions and aggressive dynamics of these ancient predators. The quality and abundance of Sinraptor fossils have made it one of the better-understood large theropods from Jurassic Asia, contributing significantly to scientific understanding of predatory dinosaurs from this period.

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Reference background: Natural History Museum, London — Dinosaurs; Smithsonian National Museum of Natural History — Dinosaurs; American Museum of Natural History — Dinosaurs & Fossils. Figures are typical published ranges; taxonomy follows the source era and modern consensus is noted where it differs. See our sources & fact-check policy.

Related dinosaurs

Other dinosaurs from the Metriacanthosauridae family.