<Li> † E. raymondi? (Case, 1908) (originally Naosaurus) </Li> <Li> † E. novomexicanus Williston and Case, 1913 </Li> <Li> † E. boanerges Romer & Price, 1940 </Li> <Li> † E. colohistion Berman, 1979 </Li>

The early permian herbivore edaphosaurus and the carnivore dimetrodon are both