Subfamily Pentacerotinae Bleeker 1859

Pentacerotoidae Bleeker 1859c:52 [ref. 373] (family) Pentaceros [stem changed to Pentacerat- by Günther 1859:212 [ref. 1961]; original stem Pentacerot- confirmed by Gill 1893b:134 [ref. 26255] and by Nelson 1976:246 [ref. 32838]; not preoccupied by Pentacerotidae Gray 1841 in Echinodermata, based on the unavailable genus name Pentaceros = Oreaster]

Quinquariinae Jordan 1907:236 [ref. 2401] (subfamily) Quinquarius