Gastrovermidae is family of Gastrovermiform Anchyrurians that specialized to live within the guts of their hosts, members of this branch are parasitic in habits and possess sharp spines along their segments to hook into the guts of the large creature they live inside of. They also have their ancestral sucker modified into various shapes, ranging from small fins to simple tubes.


The following are in this family: {{#cargo_query:table=SpeciesInfo|fields=_pageName=Species|where=Family="Gastrovermidae"|format=ul}}