Microhedylidae are a taxonomic family of sea slug

Sea slug

Sea slug is a common name used for several different groups of saltwater snails that either lack a shell or have only an internal shell, in other words this name is used for various lineages of marine gastropod mollusks that are either not conchiferous or appear not to be.The phrase "sea slug" is...

s, marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropod mollusks within the clade Acochlidiacea

Acochlidiacea

Acochlidiacea, common name acochlidians, are a taxonomic clade of very unusual sea snails and sea and freshwater slugs, aquatic gastropod mollusks within the large clade Heterobranchia...

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2005 taxonomy

Microhedylidae has been listed as a synonym of Parhedylidae in the taxonomy of Bouchet & Rocroi

Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)

The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...

 (2005). Ganitidae Rankin, 1979 has been listed as a sole family within Hedylopsoidea. The type genus of Livorniellidae was Livorniella Rankin, 1979.

2010 taxonomy

Sensu Schrödl & Neusser (2010) is Microhedylidae within the clade Microhedylacea. Parhedylidae is a synonym of of Microhedylidae. Microhedylidae s.l. may informally include Ganitidae, but inclusion of Ganitidae within Microhedylidae requires further research and higher statistical support.

Genera

Genera within the Microhedylidae include:

Microhedyle Hertling, 1930

• Microhedyle glandulifera (Kowalevsky, 1901)
• Microhedyle nahantensis (Doe, 1974)
• Microhedyle odhneri (Ev. Marcus & Er. Marcus, 1955)
• Microhedyle remanei (Er. Marcus, 1953)

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• Ganitus Marcus, 1953 - with the only species Ganitus evelinae Marcus, 1953 - it belongs to Microhedylidae s.l. / Ganitidae

• Paraganitus Challis, 1968 - with the only species Paraganitus ellynnae
  Paraganitus ellynnae
  Paraganitus ellynnae is a species of sea slug, an acochlidian, a shell-less marine gastropod mollusk in the family Microhedylidae.Paraganitus ellynnae is the only species in the genus Paraganitus.- Description :...
  
  Challis, 1968 - it belongs to Microhedylidae s.l. / Ganitidae

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Parhedyle Thiele, 1931

• Parhedyle cryptophthalma
  Parhedyle cryptophthalma
  Parhedyle cryptophthalma is a species of sea slug, an acochlidian, a shell-less marine gastropod mollusk in the family Microhedylidae.- Ecology :...
  
  (Westheide & Wawra, 1974)
• Parhedyle tyrtowii (Kowalevsky, 1900)
• Parhedyle gerlachi (Ev. Marcus & Er. Marcus, 1959)

Pontohedyle Golikov & Starobogatov, 1972

• Pontohedyle milaschewitchii (Kowalevsky, 1901)
• Pontohedyle verrucosa (Challis, 1970)