Today, paleontologists believe that Megalosaurus would have walked on two legs.
Mandatory Credit:	Julien Behal/PA Wire/AP

Today, paleontologists believe that Megalosaurus would have walked on two legs.
Mandatory Credit: Julien Behal/PA Wire/AP

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Megalosaurus, the first ever dinosaur discovery

Huge fossilized bones that emerged from slate quarries in England’s Oxfordshire beginning in the late 1600s were immediately puzzling.