Priapulidae
Priapulidae is the canonical family of priapulid worms, comprising Priapulus and Priapulosis as well as the Carboniferous genus Priapulites.
Systematics
Classification and maximum trunk length:- Family Priapulidae
- *Genus Acanthopriapulus
- **Species A. horridus
- *Genus Priapulopsis
- **Species P. australis
- **Species P. bicaudatus
- **Species P. cnidephorus
- *Genus Priapulus
- **Species P. abyssorum
- **Species P. caudatus
- **Species ''P. tuberculatospinosus''