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Thursday, Jul 04, 2002
a leg up
"The unique fossil is around 345 million years old and has been dubbed Pederpes, meaning rock crawler. "It's by far the earliest leg that looks like it could have been used on land," says Jennifer Clack of the University Museum of Zoology in Cambridge UK, who reports the discovery Nature. Previously, only a few fragments of tetrapod legs and shoulders had been found in Canada from this time gap. Before the gap, tetrapods had evolved limbs for paddling, but not walking. Immediately after the gap, they were running all over the land." also the natl geo report