Penny turtles is a common phrase used when talking about baby turtles, there is no such thing as a Penny Turtle.

The saw-shelled turtle, is a species of turtle in the Chelidae family endemic to Australia. The female is considerably larger than the male, with a carapace (shell) up to 28 cm long compared to the males which rarely get longer than about 18 cm. The carapace is roughly oval and broad at the rear. The shell has marginal serrations which are the reason for its name. It retains some of these serrations throughout its life. The carapace is mainly brown to dark brown, commonly with some dark blotches. The plastron (underside) is yellowish.