''Pycnoclavella '' is a genus of
sea squirt
Ascidiacea, commonly known as the ascidians or sea squirts, is a paraphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer test or "tunic" made of the polysaccharid ...
s first
circumscribed In geometry, a circumscribed circle for a set of points is a circle passing through each of them. Such a circle is said to ''circumscribe'' the points or a polygon formed from them; such a polygon is said to be ''inscribed'' in the circle.
* Circum ...
by
Walter Garstang
Walter Garstang Fellow of the Linnean Society, FLS Fellow of the Zoological Society of London, FZS (9 February 1868 – 23 February 1949), a Fellow of Lincoln College, Oxford and Professor of Zoology at the University of Leeds, was one of the ...
in 1891.
The
generic name comes from the Ancient Greek (''puknós'') meaning "closely united".
In 1990,
Patricia Kott
Patricia Mather (née Kott) (12 December 1925 – 4 January 2012) was an Australian zoologist and taxonomist known for her research into sea squirts. She became a leader in Australian marine science and achieved international status through her ...
placed ''Pycnoclavella'' in its own family, Pycnoclavellidae, but in 2008 it was moved back to
Clavelinidae
Clavelinidae is a family of tunicates in the order Aplousobranchia.
Genera
, WoRMS recognizes the following genera in the family Clavelinidae:
* ''Clavelina''
* ''Euclavella''
* ''Nephtheis''
* ''Pycnoclavella''
Phylogeny
''Pycnoclavell ...
.
,
WoRMS
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 ...
recognizes the following species:
* ''
Pycnoclavella arenosa''
* ''
Pycnoclavella atlantica''
* ''
Pycnoclavella aurantia''
* ''
Pycnoclavella aurilucens''
* ''
Pycnoclavella belizeana''
* ''
Pycnoclavella brava''
* ''
Pycnoclavella communis''
* ''
Pycnoclavella detorta''
* ''
Pycnoclavella diminuta''
* ''
Pycnoclavella elongata''
* ''
Pycnoclavella filamentosa''
* ''
Pycnoclavella flava''
* ''
Pycnoclavella inflorescens''
* ''
Pycnoclavella kottae''
* ''
Pycnoclavella martae''
* ''
Pycnoclavella minuta''
* ''
Pycnoclavella nana''
* ''
Pycnoclavella narcissus''
* ''
Pycnoclavella neapolitana''
* ''
Pycnoclavella producta''
* ''
Pycnoclavella stanleyi''
* ''
Pycnoclavella stolonialis''
* ''
Pycnoclavella tabella''
* ''
Pycnoclavella taureanensis''
References
Clavelinidae
Tunicate genera
{{tunicata-stub