Russell, 1953
Capitata with flask-shaped manubrium, with quadrate base and cylindrical mouth tube; gonads interradial; with or without exumbrellar cnidocyst pouches; marginal tentacles developed only at junction between radial and circular canals; 2-4 marginal tentacles with or without cnidophores or capitate side branches; with or without ocelli.
Family Porpitidae
Family Zancleidae
Family Zancleopsidae