Staurocalyptus
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| Staurocalyptus | |
|---|---|
| S. dowlingi | |
| S. glaber | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Porifera |
| Class: | Hexactinellida |
| Order: | Lyssacinosida |
| Family: | Rossellidae |
| Subfamily: | Acanthascinae |
| Genus: | Staurocalyptus Ijima, 1897 |
| Type species | |
| Rhabdocalyptus dowlingi Lambe, 1893 | |
Staurocalyptus is a genus of sponge. It was circumscribed in 1897 by Isao Ijima.[1]

Ijima circumscribed Staurocalyptus as a genus in the family Rossellidae. His initial taxonomy included three newly described species and two transferred from Rhabdocalyptus.[1] Ijimi did not designate a type species; in 1967 V. M. Koltun designated Rhabdocalyptus dowlingi Lambe, 1893 as the type species. A 2002 revision of Rossellidae by K. R. Tabachnick demoted Staurocalyptus to be a subgenus of Acanthascus and designated a new type species: Staurocalyptus glaber Ijima, 1897.[2] However, as of 2017[update], WoRMS still classifies Staurocalyptus as a genus and follows Koltun's type species designation, not that of Tabachnick.[3]
Distribution
Its species are found in the Pacific Ocean, at a depth of 30–1,700 metres (98–5,577 ft).[2]