[Heterobranchia] Burmeister, 1837
see Superorder Heterobranchia Burmeister, 1837
Euthyneura Spengel, 1881
Euopisthobranchia Jörger, Stöger, Kano, Fukuda, Knebelsberger & Schrödl, 2010
Cephalaspidea s.s. Fischer, 1883
see Order Cephalaspidea Fischer, 1883