Megalosaurus Facts
| Diet | Carnivore |
| Height | 3m |
| Length | 9m |
| Weight | 1.5 tonnes |
| Speed | 25 km/h |
| Environment | Land |
| Era | Jurassic |
| Period | Middle Jurassic |
| Type | Theropod |
| Location | England |

| Diet | Carnivore |
| Height | 3m |
| Length | 9m |
| Weight | 1.5 tonnes |
| Speed | 25 km/h |
| Environment | Land |
| Era | Jurassic |
| Period | Middle Jurassic |
| Type | Theropod |
| Location | England |
Megalosaurus was a large carnivorous theropod dinosaur that stalked the forests and coastal plains of what is now southern England during the Middle Jurassic period, around 174 to 164 million years ago. This fearsome predator holds a special place in palaeontological history as the first dinosaur to be scientifically named and described, earning it the distinction of being the founding member of our modern understanding of dinosaurs.
Standing about 3 metres tall at the hip and measuring up to 9 metres in length, Megalosaurus was built like a powerful killing machine. It possessed a large skull equipped with razor-sharp, serrated teeth perfect for slicing through flesh and bone. Its strong, muscular legs allowed it to pursue prey at speeds of up to 25 km/h, whilst its relatively small but strong arms ended in sharp claws for grasping victims.
As an apex predator of its time, Megalosaurus likely hunted a variety of prey including fish, smaller dinosaurs, and marine reptiles that lived in the shallow seas covering much of Jurassic Britain. Its robust build suggests it may have been an ambush predator, using stealth and sudden bursts of speed to overwhelm its quarry rather than engaging in long pursuit hunts.
Despite its historical importance, much about Megalosaurus remains mysterious due to the fragmentary nature of the fossil evidence. Most of what we know comes from a partial jaw, some teeth, and scattered bone fragments found in the famous Stonesfield Slate quarries of Oxfordshire.
Megalosaurus had a robust skull with large, curved, serrated teeth ideal for cutting flesh. Its powerful hind limbs were built for both speed and strength, whilst its relatively small but muscular arms ended in sharp claws for grasping prey.
Megalosaurus was likely an ambush predator that used stealth and sudden attacks to overcome its prey. Evidence suggests it may have been a solitary hunter, stalking the coastal plains and forests of Middle Jurassic England for fish, marine reptiles, and smaller dinosaurs.
Megalosaurus has appeared in various dinosaur documentaries and books, though it's often overshadowed by later discoveries like Tyrannosaurus. It featured in early Victorian literature about prehistoric life and remains a symbol of Britain's rich fossil heritage.
Megalosaurus was first described by William Buckland in 1824. The original fossils were discovered at Stonesfield Slate, Oxfordshire, England.