Spiny softshell turtles have soft, flat, rounded carapaces (shells) without large scales. The edges are soft with small spines. The nose is long and upturned. The underbelly is whitish or yellow with bones visible underneath. They have claws and their feet are webbed for swimming. The body is olive or tan with black speckles and a dark rim around the edge of their shell. Adult males have olive and yellow coloration on their carapaces, with black "eyespots", and a thicker tail tham females. Males are also smaller than females, with a shell length of 12.7 to 24 cm. Females are 24 to 48 cm in length, with dark carapace and a small tail that doesn't go beyond the edge of their carapaces.
Range length: 12.7 to 48 cm.
Other Physical Features: ectothermic ; heterothermic ; bilateral symmetry
Sexual Dimorphism: female larger; sexes shaped differently