English: The inclusion of euconodonts in the vertebrates, or even craniates, is still controversial. Admittedly, the tissue structure of the "conodonts" (i.e; the denticles situated in their mouth; left) is at odds with conventional vertebrate hard tissues. Nevertheless, the eyes, body shape, and tail stucture of the euconodonta are strikingly vertebrate-like. After Purnell et al. 1995