Priapulida

Ancalagonidae

Archotuba

Chaetostephanidae Salvini-Plawen, 1974

Cricocosmia Hou & Sun, 1988

Fieldia Walcott, 1912

Fieldiidae

Halicryptidae

Lecythioscopa Conway Morris, 1977

Lecythioscpoa

Louisella Walcott, 1911

Maccabeidae

Miskoiidae

Ottoiidae

Palaeopriapulites

Paraselkirkia

Priapulidae Gosse, 1855

Priapulites Schram, 1973

Protopriapulites

Scolecofura

Scolecofurca Conway Morris, 1977

Selkirkia Walcott, 1911

Selkirkiidae

Tubiluchidae van der Land, 1970

Tubuluchidae