Hedylopsoidea was defined as a

taxonomic Taxonomy is the practice and science of categorization or classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. ...

superfamily of

sea slug Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary t ...

s, mostly marine

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

s within the informal group Opisthobranchia according to the taxonomy of Bouchet & Rocroi (2005). Schrödl & Neusser (2010)Schrödl M. & Neusser T. P. (2010). "Towards a phylogeny and evolution of Acochlidia (Mollusca: Gastropoda: Opisthobranchia)". ''

Zoological Journal of the Linnean Society The ''Zoological Journal of the Linnean Society'' is a monthly peer-reviewed scientific journal covering zoology published by Oxford University Press on behalf of the Linnean Society. The editor-in-chief is Maarten Christenhusz (Linnean Society). ...

'' 158: 124-154. . have redefined the taxonomy of Acochlidiacea in 2010.

Families

Families within the superfamily Hedylopsoidea according to the taxonomy of Bouchet & Rocroi (2005) include: *Family

Hedylopsidae Hedylopsis is a genus of sea slugs, marine gastropod mollusks within the clade Acochlidiacea. Taxonomy Hedylopsidae has been classified within the superfamily Hedylopsoidea in the taxonomy of Bouchet & Rocroi (2005). Sensu Schrödl & Neus ...

*Family

Ganitidae Parhedylidae are a Taxonomy (biology), taxonomic family of sea slugs, marine (ocean), marine gastropod mollusks in the superfamily Parhedyloidea. MolluscaBase eds. (2021). MolluscaBase. Parhedylidae Thiele, 1931. Accessed through: World Register ...

*Family

Livorniellidae Parhedylidae are a Taxonomy (biology), taxonomic family of sea slugs, marine (ocean), marine gastropod mollusks in the superfamily Parhedyloidea. MolluscaBase eds. (2021). MolluscaBase. Parhedylidae Thiele, 1931. Accessed through: World Register ...

*Family Minicheviellidae *Family Parhedylidae *Family

Tantulidae ''Tantulum elegans'' is a species of freshwater slug, an aquatic shell-less gastropod mollusk within the clade Acochlidiacea. This species has no shell. The maximum recorded length is 2 mm.Welch J. J. (2010). "The "Island Rule" and Deep-Sea ...

References

{{Taxonbar, from=Q5697827 Obsolete gastropod taxa