Eric Walker added Theriodontia to Neotherapsida, and added Neotherapsida to Eutherapsida

Eric Walker added Neotherapsida to Eutherapsida, and added Eutherapsida to Therapsida

Eric Walker added Dicynodontia and Eutherapsida and Therapsid - Wikipedia to Therapsida, and added Therapsida to Sphenacodontoidea