[Heterobranchia] Burmeister, 1837 see Superorder Heterobranchia Burmeister, 1837 Euthyneura Spengel, 1881 Euopisthobranchia Jörger, Stöger, Kano, Fukuda, Knebelsberger & Schrödl, 2010 Umbraculoidea Dall, 1889 (1827)