Breizacanthus

Breizacanthus is a genus in Acanthocephala (thorny-headed worms, also known as spiny-headed worms).

==Taxonomy== The genus was described by Golvan in 1969. The National Center for Biotechnology Information does not indicate that any phylogenetic analysis has been published on any Breizacanthus species that would confirm its position as a unique order in the family Arhythmacanthidae. In the absence of genetic information, morphological traits are used to define this genus. These traits include: a cylindrical proboscis, the absence of spines on the trunk, only the anterior end of trunk is dilated, and the lemnisci are longer than the proboscis receptacle. It is morphologically very similar to Euzetacanthus where both the anterior and posterior ends of trunk are dilated and the lemnisci are not longer than the proboscis receptacle.