Ordo Holacanthida

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

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