Footprints of the first fish to walk on land.01.wmv
independent researcher told BBC News. Another key surprise from the research is the recognition that these tetrapods lived in a marine environment, perhaps a coral lagoon. The favoured origin before now for the emergence of tetrapods had been marshy environments, such as deltas or lakes where freshwater dominated. The team behind the latest research said the new explanation made sense because it would have allowed marine ancestors of tetrapods gradually to acquire terrestrial competence ...
