Schewiakoff, 1926
Family Acanthocollidae Febvre, Febvre and Michaels, in press
Genus Acanthocolla
Genus Acanthocyrtha
Genus Acanthospira
Family Acanthochiasmidae Haeckel, 1862, emend. Schewiakoff, 1926
Genus Acanthochiasma
Family Acanthoplegmidae Schewiakoff, 1926, emend. Reshetnjak, 1979
Genus Acanthoplegma