cynodont

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

三瘤齿三瘤齿中的一属，而三瘤齿犬齿中最先的一群。

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.

即使原犬很原始，牠们已有先的哺乳特徵。原犬外表与头亚目动物有点似。