Fossil from before dinosaurs re-investigated by doctor

Fossil from before dinosaurs re-investigated by a retired doctor with a passion for palaeontology. Around 30 years ago more than 4-thousand fossilied fish were uncovered near Canowindra in central western New South Wales. Now David McGrath and his wife have bought the farm next door to the original dig site, hoping to find new evidence of the first animals to make their way onto land.