genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...
of very small or minute
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,
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
* ...
opisthobranch
Opisthobranchs () is now an informal name for a large and diverse group of specialized complex gastropods which used to be united in the subclass Opisthobranchia. That taxon is no longer considered to represent a monophyletic grouping.
Euopisth ...
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
family
Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...
Limapontiidae
Limapontiidae is a taxonomic family of small to minute sacoglossan sea slugs. These are marine opisthobranch gastropod mollusks.Bouchet, P.; Gofas, S. (2011). Limapontiidae. Accessed through: World Register of Marine Species at http://www.marines ...
.WoRMS : Placida accessed : 13 October 2010]
Although similar in appearance to
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 matc ...
s, species in this genus are actually
Sacoglossa
Sacoglossa, commonly known as the sacoglossans or the "solar-powered sea slugs", are a superorder of small sea slugs and sea snails, marine gastropod mollusks that belong to the clade Heterobranchia. Sacoglossans live by ingesting the cellular ...
ns.
Species
Species within this genus include:
* '' Placida aoteana'' (Powell, 1937)
* '' Placida babai'' Ev. Marcus, 1982
* ''
Placida barackobamai
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida brevirhina
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida brookae'' McCarthy, Krug & Valdés, 2017
* ''
Placida cremoniana
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida dakariensis'' (Pruvot-Fol, 1953)
* '' Placida dendritica'' (Alder and Hancock, 1843)
* ''
Placida fralila
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida kevinleei
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida kingstoni
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida saronica
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida sudamericana
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida tardyi
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida verticillata
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida viridis
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida dendritica'' (Alder & Hancock, 1843)
; Taxa inquirenda:
* ''
Placida capensis
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Placida daguilarensis
''Placida'' is a genus of very small or minute sea slugs, marine opisthobranch gastropod mollusks in the family Limapontiidae.Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979
*
* Jensen K.E. (2007) ''Biogeography of the Sacoglossa (Mollusca, Opisthobranchia).'' Bonner Zoologische Beiträge 55:255–281.