Radiolaria - Nassellaria - Hsuidae

Alternative combinations: Broctus izeensis, Canutus izeensis

Full reference: E. A. Pessagno, Jr. and P.A. Whalen. 1982. Lower and Middle Jurassic Radiolaria (multicyrtid Nassellariina) from California, east-central Oregon and the Queen Charlotte Islands, B.C. Micropaleontology 28(2):111-169

Belongs to Parahsuum according to S. Gorican et al. 2006

Sister taxa: Parahsuum carpathicum, Parahsuum edenshawi, Parahsuum formosum, Parahsuum hiconocosta, Parahsuum longiconicum, Parahsuum mostleri, Parahsuum officerense, Parahsuum ovale, Parahsuum primitivum, Parahsuum publicum, Parahsuum simplum, Parahsuum vizcainoense, Lupherium nitidum, Lupherium snowshoense, Drulanta bella, Drulanta pulchra, Fantus exiguus, Fantus schoolhousensis

Type specimen: USNM 307224

Ecology: passively mobile planktonic omnivore