A fossil, believed to be the oldest vertebrate ever found, has been uncovered in South Australia. The five-centimetre fossil, which looks like an elongated tadpole and is believed to be at least 560 million years old, was unearthed in sandstone by station owner Ross Fargher at a secret location in SA's Flinders Ranges. The SA Museum today said the fossil was part of a marine animal known as the Ediacara Chordate. The Ediacara Chordate discovered in South Australia.Photo: South Australian Museum A fin on its back, a set of inclined muscle bars and a head were clearly visible, the museum...