Inspected by George Rawlings 6.2.2013. It is a fossil of a Murray Cod (maccullochella macquariensis) from diatomaceous earths in New South Wales.A very fragile chalk fossil of a fresh water fish. It is aged about 20 million years and was found in the locality of a chalk mine at Bugaldie in New South Wales (near Coonabarrabran).fossil murray-cod chalk-mine bugaldie