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Restoration by R. Bakker for John Ostrom 1969. |
Deinonychus
Deinonychus was discovered in 1964 in Montana, and was described by John Ostrom. It was a larger version of Velociraptor and was certainly capable of running and leaping. It was interpreted by Robert Bakker. amongst others, as a warm blooded, agile, intelligent and very swift creature.
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Restoration by R. Bakker for John Ostrom 1969. |
Ostrom and Bakker went on to propose new ideas about dinosaurs, including the theory that they may have been fast moving warm-blooded creatures - like birds - rather than the slow ponderous cold-blooded creatures - like lizards - that we generally envisage.