''Paracoryphella islandica'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

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 time ...

, an aeolid

nudibranch Nudibranchs () are a group of soft-bodied marine gastropod molluscs which shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to match, ...

, a marine gastropod

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 ...

in the family

Paracoryphellidae Paracoryphellidae is a taxonomic family of brightly coloured sea slugs, specifically nudibranchs, marine gastropod mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are k ...

History of the taxonomy

''Paracoryphella islandica'' was originally described as ''Coryphella islandica'' by

Nils Hjalmar Odhner Nils Hjalmar Odhner (6 December 1884 – 12 June 1973) was a Swedish zoologist who studied mollusks, a malacologist. He was professor of invertebrate zoology at the Swedish Museum of Natural History, Stockholm, and a member of the Royal Swedish Aca ...

in 1937. M. C. Miller (1971)Miller M. C. (1971). "Aeolid nudibranchs (Gastropoda:Opisthobranchia) of the families Flabellinidae and Eubranchidae from New Zealand waters". ''Zoological Journal of the Linnean Society'' 50(4): 311-337. assigned this species to a new genus ''Paracoryphella'' within a new family Paracoryphellidae. Gosliner & Kuzirian (1990) synonymized ''Paracoryphella'' with ''Flabellina'', but Korshunova et al., 2017 reinstated Miller's genus and family.Korshunova, T.; Martynov, A.; Bakken, T.; Evertsen, J.; Fletcher, K.; Mudianta, W.; Saito, H.; Lundin, K.; Schrödl, M.; Picton, B. (2017)
Polyphyly of the traditional family Flabellinidae affects a major group of Nudibranchia: aeolidacean taxonomic reassessment with descriptions of several new families, genera, and species (Mollusca, Gastropoda).
ZooKeys. 717: 1-139.

References

{{Taxonbar, from=Q3894993 Paracoryphellidae Gastropods described in 1937