Classification
Polychaeta [klas]Sedentaria [onderklas]
Canalipalpata [infraklas]
Spionida [orde]
Orde Spionida contains the following taxa:
Apistobranchidae [familie]
Magelonidae [familie]
Poecilochaetidae [familie]
Psammodrilidae [familie]
Spionidae [familie]