Lower jaw of Dugong, discovered at Shea's Creek, Sydney, showing Cuts made by Aborigines with Stone Tomahawks 1896

Contributed By
(Plate Xa, 'On the occurrence of a submerged forest, with remains of the Dugong, at Shea's Creek near Sydney' by R Etheridge, Junr, Professor TW Edgeworth David, BA, FGS, and HW Grimshaw, M Inst CE, Journal and proceedings of the Royal Society of New South Wales, Vol 30, 1896, p 158)