''Vema'' is a
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 deep-sea
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 species of molluscs are recognized. The number of fossil species is esti ...
s,
monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell inhabiting deep sea environments . Extant representatives were not recognized as such until 1952; previously they were known only from ...
ns. The genus is named after the oceanographic
Research Vessel ''Vema''.
All ''Vema'' species have six pairs of gills.
Species
* ''
Vema bacescui''
(Menzies, 1968)
* ''
Vema ewingi''
(Clarke & Menzies, 1959)
* ''
Vema levinae''
Warén, 1996
* ''
Vema occidua''
B. A. Marshall, 2006
References
Monoplacophora
Mollusc genera
{{Mollusc-stub