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

三瘤是三瘤科的一属，而三瘤是最先进的一群。

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.

即使原鳄龙科很原始，牠们已有先进的哺乳特徵。原鳄龙科外表与头亚目动物有点似。