 The Lark Quarry site is about south west of the western Queensland town of Winton.The traditional account is that 104 to 92 million years ago, a group of perhaps 180 chicken-sized coelurosaurs and Bantam to emu-sized ornithopods were disturbed by the arrival of a single much larger theropod, perhaps "Australovenator" or a related form, which may have been up to 6 metres long with 50-centimetre feet.The two smaller track types are placed within their own ichnotaxa "Skartopus" (small coelurosaurs) and "Wintonopus" (ornithopods), while the larger tracks were referred to cf.