Stock Photo - Jurassic dinosaurs. Computer artwork of an Allosaurus right confronting a grazing Stegosaurus left in a Jurassic redwood forest. Allosaurs were large carnivorous reptiles that lived during the late Jurassic period 155 to 145 million years ago. They were bipedal two_legged predators that averaged a height of 8.5 metres. Stegosaurus, which could weigh as much as 5 tonnes, were herbivores that wielded powerful tails tipped with 3_foot spikes.

Stock Photo: Jurassic dinosaurs. Computer artwork of an Allosaurus right confronting a grazing Stegosaurus left in a Jurassic redwood forest.

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