Pseudopentaceros Bleeker [P.] 1876:270 Masc. Pentaceros richardsoni Smith 1844. Type by original designation (also monotypic). •Valid as Pseudopentaceros Bleeker 1876 -- (Hardy 1983:206 [ref. 5385], Heemstra 1986:623 [ref. 5660], Humphreys & Tagami 1986 [ref. 6000], Humphreys et al. 1989 [ref. 9286], Gomon et al. 1994:635 [ref. 22532], Mundy & Moser 1997:241 [ref. 23514], Mecklenburg et al. 2002:658 [ref. 25968], Bray et al. 2006:1315 [ref. 29091], Gomon 2008:616 [ref. 30616]). •Synonym of Pentaceros Cuvier 1829 -- (Kim 2012:94 [ref. 32039]). Current status: Synonym of Pentaceros Cuvier 1829. Pentacerotidae: Pentacerotinae.