Gastropoda - Heterostropha

Alternative spelling: Aplysiomorpha

Synonym: Anaspidea Fischer 1883

Parent taxon: Euopisthobranchia according to P. Bouchet et al. 2017

See also Beesley 1998 and Sepkoski 2002

Sister taxa: Pteropoda, Runcinida, Umbraculida

Subtaxa: Akeroidea Aplysioidea Dolabella Sabaziella

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