genus
Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...
of
sea cucumber
Sea cucumbers are echinoderms from the class (biology), class Holothuroidea ( ). They are benthic marine animals found on the sea floor worldwide, and the number of known holothuroid species worldwide is about 1,786, with the greatest number be ...
s in the family
Synaptidae
Synaptidae is a family of sea cucumbers that have no tube feet, tentacle ampullae, retractor muscles, respiratory trees, or cuvierian tubules. They also lack radial canals of the Sea cucumber#Anatomy, water-vascular system, with only the circumo ...
. The type species is ''
Polyplectana kefersteinii
''Polyplectana'' is a genus of sea cucumbers in the family Synaptidae. The type species is '' Polyplectana kefersteinii''.
Species
The World Register of Marine Species lists the following species
A species () is often defined as the large ...
''.
Species
The
World Register of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms.
Content
The content of the registry is edited and maintained by scien ...
lists the following
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
Polyplectana kefersteinii
''Polyplectana'' is a genus of sea cucumbers in the family Synaptidae. The type species is '' Polyplectana kefersteinii''.
Species
The World Register of Marine Species lists the following species
A species () is often defined as the large ...