| Diet | Carnivore |
| Height | 3m |
| Length | 8m |
| Weight | 1 tonnes |
| Environment | Land |
| Era | Jurassic |
| Period | Late Jurassic |
| Type | Theropod |
| Location | England |
Metriacanthosaurus was a large theropod dinosaur that roamed the coastal plains and river systems of what is now England during the Late Jurassic period, approximately 161.5 million years ago. This formidable predator lived in a warm, humid world where lush forests and lagoons supported a diverse ecosystem of dinosaurs, marine reptiles, and early mammals.
As a theropod, Metriacanthosaurus was a bipedal carnivore with powerful legs, sharp claws, and a mouth full of pointed teeth designed for slicing through flesh. It likely measured around 8 metres in length and stood about 3 metres tall at the hip, making it a substantial predator of its time. The dinosaur's name, meaning 'moderately spined lizard', refers to the neural spines on its vertebrae, which were taller than those of many other theropods but not as extremely developed as those seen in some related species.
Metriacanthosaurus would have been an active hunter, using its keen senses and powerful legs to pursue prey across the Jurassic landscape. Its diet likely consisted of smaller dinosaurs, early mammals, fish, and possibly carrion when the opportunity arose. The dinosaur's relatively long arms and strong claws would have been useful for grasping and subduing prey.
What makes Metriacanthosaurus particularly significant is that it represents the only known member of the metriacanthosaurid family found outside of Asia, providing important insights into how these predatory dinosaurs spread across the ancient supercontinent of Pangaea during the Jurassic period.
Metriacanthosaurus had moderately tall neural spines along its backbone, giving it a slightly ridge-backed appearance. It possessed the typical theropod build with powerful hind limbs, relatively long arms for its group, and a large skull filled with sharp, serrated teeth.
As a large predator, Metriacanthosaurus likely hunted both actively and opportunistically, pursuing smaller dinosaurs and other prey across its territory. It may have been a solitary hunter, using ambush tactics near water sources where prey animals came to drink.
Metriacanthosaurus appeared in the novel 'Jurassic Park' by Michael Crichton, where it was mentioned as one of the dinosaur species being cloned for the park.
Metriacanthosaurus was first described by Friedrich von Huene in 1923. The original fossils were discovered at Oxford Clay Formation, Oxfordshire, England.
