| Red side-necked turtle | |
|---|---|
| | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Testudines |
| Suborder: | Pleurodira |
| Family: | Chelidae |
| Subfamily: | Chelinae |
| Genus: | Rhinemys Wagler, 1830 |
| Species: | R. rufipes |
| Binomial name | |
| Rhinemys rufipes | |
| | |
| Range | |
| Synonyms [3] [4] [5] | |
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]