[1] Ijima circumscribed Staurocalyptus as a genus in the family Rossellidae.

His initial taxonomy included three newly described species and two transferred from Rhabdocalyptus.

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] Its species are found in the Pacific Ocean, at a depth of 30–1,700 metres (98–5,577 ft).