Philinoidea is 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 SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...

of sea slugs, specifically headshield

slug Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc. The word ''slug'' is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a smal ...

marine Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine debris * Marine habitats * Marine life * Marine pollution Military * ...

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 in the order

Cephalaspidea The order Cephalaspidea, also known as the headshield slugs and bubble snails, is a major taxon of sea slugs and bubble snails, marine gastropod mollusks within the larger clade Euopisthobranchia.Jörger K. M., Stöger I., Kano Y., Fukuda H., ...

. MolluscaBase eds. (2021). MolluscaBase. Philinoidea Gray, 1850 (1815). Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=196322 on 2021-10-14

Anatomy

The species in the Superfamily Philinoidea are generally small animals, and have no shell or

gill A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

s. Unlike some related forms, the

viscera In biology, an organ is a collection of tissues joined in a structural unit to serve a common function. In the hierarchy of life, an organ lies between tissue and an organ system. Tissues are formed from same type cells to act together in a ...

l mass is not sharply set off from the rest of the body.

Taxonomy

According to the latest taxonomy, the following families are recognised in the Superfamily Philinoidea: *

Aglajidae Aglajidae is a family of often colorful, medium-sized, sea slugs, marine opisthobranch gastropod mollusks. These are not nudibranchs; instead they are headshield slugs, in the clade Cephalaspidea.Bouchet, P. (2012). Aglajidae. Accessed through: ...

Alacuppidae Alacuppidae is a family of often colorful, medium-sized, sea slugs, marine opisthobranch gastropod mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs o ...

* Antarctophilinidae Moles, Avila & Malaquias, 2019 * Colpodaspididae * Gastropteridae *

Laonidae Laonidae is a family of small marine snails belonging to the superfamily Philinoidea Philinoidea is a taxonomic superfamily of sea slugs, specifically headshield slugs, marine gastropod mollusks in the order Cephalaspidea. MolluscaBase eds. (2 ...

Philinidae Philinidae is a family of medium-sized sea slugs, marine opisthobranch gastropod mollusks. These are headshield slugs, in the order Cephalaspidea.Bouchet, P. (2012). Philinidae. Accessed through: World Register of Marine Species at http://www. ...

Philinoglossidae Philinoglossidae is a family of marine snails, gastropod mollusc 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 spe ...

* Philinorbidae ** '' Philinorbis'' Habe, 1950 ** '' Pseudophiline'' Habe, 1976 *

Scaphandridae Scaphandridae is a family of sea snails, marine gastropod mollusks in the superfamily Philinoidea. Taxonomy Scaphandridae was considered as a synonym of Cylichnidae in the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). However, M ...

References

External links

Euopisthobranchia Taxa named by John Edward Gray Gastropod superfamilies {{Heterobranchia-stub