cynodont

Trityldon(Greek for 3 cusped tooth) was a species of tritylodont, one of the most advanced group of cynodont therapsids.

三瘤齿兽是三瘤齿兽科中的一属，而三瘤齿兽类是犬齿兽类中最先的一群。

Despite being the basal member of the cynodont clade, they already showed some of the advanced mammalian characteristics, but Procynosuchids bore resemblance to the Therocephalians.

即使原犬鳄龙科很原始，牠们已有先的哺乳类特徵。原犬鳄龙科外表与兽头亚目有点类似。