Staurocalyptus

Staurocalyptus is a genus of sponge. It was circumscribed in 1897 by .
Taxonomy.
Ijima cirumscribed "Staurocalyptus" as a genus in the family Rossellidae. His initial taxonomy included three newly described species and two transferred from "Rhabdocalyptus". Ijimi did not designate a type species; in 1967 V. M. Koltun designated "Rhabdocalyptus dowlingi" 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" . However, , WoRMS 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: