Infraclass
Canalipalpata
Myxicola infundibulum. Photo: (c) Frédéric ANDRE, some rights reserved (CC BY-NC)
Canalipalpata, also known as bristle-footed annelids or fan-head worms, is an infraclass of polychaete worms, with 31 families in it including the Sabellida (tubeworms, fanworms, and feather duster worms) and the Alvinellidae, a family of deep-sea worms associated with hydrothermal vents.