Ischnacanthidae Woodward, 1891

Acanthodopsis Hancock & Atthey, 1868

Acanthopora Valiukevicius, 2003

Arcticacanthus Valiukevicius, 2003

Arenaceacanthus Valiukevicius, 2004

Bracteatacanthus Valiukevicius, 2004

Helenacanthus Bryant, 1934

Ischnacanthus Powrie, 1864

Rockycampacanthus Long, 1986