Red_side-necked_turtle
Red side-necked turtle
Species of turtle
The red side-necked turtle (Rhinemys rufipes), red turtle, red-footed sideneck turtle,[1] William's toadhead turtle, or red-footed Amazon side-necked turtle[5] is a monotypic species of turtle in the family Chelidae. It is found in Brazil, Colombia, and possibly Peru.[5] This species is dimorphic in size meaning the sexes show different characteristics.[8] One study found that the largest female out of a group of 24 was 256 mm in carapace length. Out of that same group, the largest male was only 199 mm in carapace length.[8] A study focused on determining how these turtles acquire their sex discovered that it is not environmentally determined rather, it is a genetic sex determination. [9]