A ziphodont crocodile from the late Pleistocene King Creek catchment, Darling Downs, Queensland

A well preserved reptilian tooth recovered from late Pleistocene fluviatile sediments along King Creek on the Darling Downs, south eastern Queensland, displays a suite of characters including lateral compression and curvature, lenticular cross section, length/ width ratio >1.3, slight anterior/posterior recurve and distinct, strongly serrate carinae, that enable it to be attributed to a ziphodont crocodile (Quinkana sp.). It is the first record of a ziphodont in the King Creek ecosystem and only the second for the eastern Darling Downs in over 150 years of fossil collecting. This tooth as well as previously documented fossils from Tea Tree Cave (N. Qld) and Texas Caves (S. Qld) provides the youngest records of ziphodont crocodiles globally.