Yellow Mud Turtle Subspecies
A:Yellow on jaw, throat and lower shell. From Kansas and eastern Colorado south to Texas, also southern New Mexico and southeast Arizona.
Yellow mud turtle, Kinosternon flavescens flavescens
B:Yellow on jaw only. From northwest Illinois, southeast Iowa, and northeast Missouri only.
Illinois mud turtle, Kinosternon flavescens spooneri
C:Yellow on throat, shell olive. From southern Arizona only.
Southwestern mud turtle, Kinosternon flavescens arizonense