Allosaurus (Al-o-sawr-us) Length: 35 Feet Lived during: Late Jurassic Found: North America, Africa Name Means: Different Lizard One of the biggest, most common, and most fearsome meat eaters (or carnosaurs) of  Jurassic times, Allosaurus had a 3 foot long head and powerful jaws filled with long, sharp teeth.  The jaws were also hinged, letting the dinosaur open it mouth incredibly wide.  In a dramatic fossil discovery, marks left by Allosaurus's teeth were once found on an Apatosaurus skeleton. Lived at the same time as:  Apatosaurus, Brachiosaurus, Camptosaurus, Diplodoncus, Ornitholestes, Stegosaurus  

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