eustreptospondylus found actually attached to the skull, but lying nearby, so there is a certain amount of educated guesswork about their position in life.
The jaws of Dilophosaurus give a clue to its lifestyle. The lower jaw was strong and full of long, sharp, thin teeth. The upper jaw had a cluster of teeth at the front, separate from the rest of the teeth — rather like the arrangement in the jaws of a modern crocodile.
So, although Dilophosaurus had a large head and strong jaws, it probably did not kill its victims by biting them; the thin teeth and delicate head crests would have been too vulnerable in a fight. More likely, this dinosaur caught and ripped its prey with the clawed feet and hands. Or, like many of its relatives, it could have fed on the corpses of creatures killed by stronger carnosaurs.
name: Eustreptospondylus time: Middle Jurassic to Late
Cretaceous locality: Europe (England) size: 23 ft/7 m long
A nearly complete skeleton of this early megalosaur was unearthed in southern England, and described in 1964- It is now mounted in the University Museum of Oxford, and although parts of its skull are missing, it remains the best-preserved specimen of any European carnosaur discovered to date.
In build, Eustreptospondylus was so similar to Megalosaurus that, until 1964, it was still thought to be that dinosaur.
name: Megalosaurus time: Early Jurassic to Late Jurassic locality: Europe (England and
France) and Africa (Morocco) size: 30 ft/9 m long
Megalosaurus, or "great lizard," may not be the biggest or heaviest dinosaur, but it can claim a number of other "firsts." The first dinosaur bone on record, dis yangchuanosaurus
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