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''Staurocalyptus'' is a genus of
Ijima circumscribed ''Staurocalyptus'' as a genus in the family
sponge
Sponges or sea sponges are primarily marine invertebrates of the animal phylum Porifera (; meaning 'pore bearer'), a basal clade and a sister taxon of the diploblasts. They are sessile filter feeders that are bound to the seabed, and a ...
. It was 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 ...
in 1897 by Isao Ijima
was a Japanese zoologist known for his studies of sponges (Porifera) — including his circumscription of the genus '' Staurocalyptus'' — leeches (Hirudinea), flatworms (Turbellaria), birds, and fish. Professor of Zoology at Tokyo Imperial Un ...
.
Taxonomy
Ijima circumscribed ''Staurocalyptus'' as a genus in the family Rossellidae
Rossellidae is a family of glass sponges belonging to the order Lyssacinosa. The family has a cosmopolitan distribution and is found at a large range of depths (, and likely deeper).
Description
The body is usually a cup-like structure. In st ...
. His initial taxonomy included three newly described species and two transferred from ''Rhabdocalyptus''. Ijimi did not designate a type species
In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...
; in 1967 V. M. Koltun designated ''Rhabdocalyptus dowlingi'' as the type species. A 2002 revision of Rossellidae
Rossellidae is a family of glass sponges belonging to the order Lyssacinosa. The family has a cosmopolitan distribution and is found at a large range of depths (, and likely deeper).
Description
The body is usually a cup-like structure. In st ...
by K. R. Tabachnick demoted ''Staurocalyptus'' to be a subgenus of '' Acanthascus'' and designated a new type species
In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...
: ''Staurocalyptus glaber'' . However, , 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 ...
still classifies ''Staurocalyptus'' as a genus and follows Koltun's type species designation, not that of Tabachnick.
Distribution
Its species are found in the Pacific Ocean, at a depth of .Species
, WoRMS recognizes the following seventeen species: * ''Staurocalyptus affinis
''Staurocalyptus affinis'' is a species of marine sponge.
Distribution
The species occurs on North Pacific Ocean.
References
Hexactinellida
Sponges described in 1904
{{Sponge-stub ...
''
* '' Staurocalyptus celebesianus''
* '' Staurocalyptus dowlingi''
* '' Staurocalyptus entacanthus''
* '' Staurocalyptus fasciculatus''
* '' Staurocalyptus fuca''
* '' Staurocalyptus glaber''
* '' Staurocalyptus hamatus''
* '' Staurocalyptus heteractinus''
* '' Staurocalyptus microchetus''
* '' Staurocalyptus pleorhaphides''
* '' Staurocalyptus psilosus''
* '' Staurocalyptus roeperi''
* '' Staurocalyptus rugocruciatus''
* '' Staurocalyptus solidus''
* '' Staurocalyptus tubulosus''
* '' Staurocalyptus tylotus''
References
Further reading
* * * * * Hexactinellida Hexactinellida genera {{sponge-stub