Allosaurus

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Allosaurus,

late Jurassic carnivorous dinosaurdinosaur
[Gr., = terrible lizard], extinct land reptile of the Mesozoic era. The dinosaurs, which were egg-laying animals, ranged in length from 2 1-2 ft (91 cm) to about 127 ft (39 m).
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 of the W United States. Specimens of 30 to 40 ft (9 to 12 m) have been found. It had stong hind legs, smaller sharply clawed forelimbs, two small horns directly above the eyes, and expandable jaws that could widen to consume large pieces of meat.

Allosaurus

[‚al·ə′sȯr·əs]
(paleontology)
A carnivorous therapod dinosaur, 40 feet (12 meters) long, and weighing 1.5 tons, from the Late Jurassic Period that had muscular hindlimbs, small forelimbs (with three-fingered hands), and sharp teeth; similar to but smaller than Tyrannosaurus.
References in periodicals archive ?
Based on Arthur Conan Doyle's novel, this oft-told story of a hidden plateau in the Amazon jungle where allosaurs are free to devour, well, whatever they want, this ``Lost World'' manages to find its way past the silly boy's tale and offer a fairly diverting entertainment.
But most likely allosaurs and other big meat-eaters would have enjoyed a nice juicy human for lunch.
Among his and his volunteers' finds: megalosaurs, allosaurs, and, this summer, what may be one of the earliest Cretaceous ostrich dinosaurs.
Allosaurs, sometimes confused with the Tyrannosaurus rex, were large theropod dinosaurs.