Newspaper article The Canadian Press

National Audio 2:45 PM ET

Newspaper article The Canadian Press

National Audio 2:45 PM ET

Article excerpt

National Audio 2:45 PM ET

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NAT069 - (Bipedal-Dinosaurs) EDMONTON. x-13s. Researchers at the University of Alberta say they have a new theory for why some dinosaurs stood on two feet instead of four. The trait was passed on from the creatures' much smaller ancestors, called proto-dinosaurs. Scott Persons, the lead author of a new paper, says he found clues in the tails of proto-dinosaurs. ("..popping a wheelie.") (SOURCE:The Canadian Press)

TAG: It had been been thought dinosaurs evolved to be bipedal so their hands were free to catch prey. But Persons says even dinosaurs that are herbivores moved on two feet, so that theory no longer stands up.

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NAT070 - (Bipedal-Dinosaurs) EDMONTON. x-14s. Researchers at the University of Alberta suggest some dinosaurs stood on two feet instead of four after inheriting a trait from their much smaller ancestors, called proto-dinosaurs. Scott Persons, the lead author of a new paper, says it was earlier thought that the ancient lizards stood on two feet in order to free up their front limbs for other tasks -- much like humans today. …

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