The Sawshelled Turtle, Myuchelys latisternum (Family Chelidae), is a small to medium-sized short-necked turtle (maximum recorded carapace length to 287 mm in females, 224 mm in males) endemic to northern and eastern Australia. Historically known for a long time as Elseya latisternum, the species has recently also been occasionally associated with the invalid genus name Wollumbinia. The species inhabits deep to shallow pools and lagoons on permanently flowing waterways, particularly in the upper reaches and side channels of larger rivers. Myuchelys latisternum is chiefly carnivorous, feeding on a variety of aquatic invertebrates, but will also consume fruit, and other vegetation. Nests are laid in fine sand or alluvial substrate on banks close to the water, with clutch size ranging from 9 to 20 eggs and oviposition recorded from September to March. The species is widespread and no significant current conservation threats have been identified. distribution.-Australia. The species has a broad distribution from the Richmond River in northern New South Wales north along the east coast of Queensland to the Jardine River at the tip of Cape York, around the rivers draining into the Gulf of Carpentaria to the headwaters of the Daly River in the Northern Territory. Occupies streams of the Arnhem Land Plateau and associated escarpment plunge pools, including those of the Liverpool, Katherine, South Alligator and Mary Rivers. synonymy.-Elseya latisternum Gray 1867, Emydura latisternum, Elseya latisternum latisternum, Wollumbinia latisternum, Myuchelys latisternum, Euchelymys spinosa Gray 1871a, Elseya latisternon Gray 1871b (nomen novum), Wollumbinia dorsii Wells 2009 (nomen illegitimum). subspeCies.-None currently known. stAtus.

The Gulf Snapping Turtle, Elseya lavarackorum (Family Chelidae), is a medium to large-sized short-necked turtle (carapace length to ca. 350 mm, potentially to 500 mm), endemic to a small area of northern Australia in the vicinity of the Queensland-Northern Territory border. The species inhabits deep pools on permanently flowing spring-fed waterways in the upper to middle reaches of rivers, reaching its highest densities adjacent to intact native riparian vegetation. Adult E. lavarackorum are almost exclusively herbivorous, feeding predominantly on fruit, leaves, and algae. The species nests in the dry season (May-July), with a clutch size that varies from 6 to 9 eggs. Nests are laid in fine sand or alluvial substrate on banks close to the water. Primary threats are thought to be feral pig predation on nests and degradation of native riparian vegetation by weeds and fire. Large females, in particular, are subject to harvesting by traditional landowners, but this is not presently considered a significant conservation threat. distribution.-Australia. The species has a limited distribution in the upper and middle reaches of the Gregory-Nicholson and Calvert catchments, with unconfirmed reports from the Robinson River in northwest Queensland and northeastern Northern Territory. synonymy.-Emydura lavarackorum White and Archer 1994, Elseya lavarackorum, Elseya dentata lavarackorum. subspecies.-None currently known.