richardsoni, Pentaceros Smith [A.] 1844:no pagination [51], Pl. 21 [Illustrations of the zoology of South Africa v. 4; ref. 4035] Very deep water near Cape Point, Cape of Good Hope, South Africa. Holotype (unique): BMNH 1845.7.3.56 (stuffed). •Valid as Pseudopentaceros richardsoni (Smith 1844) -- (Hardy 1983:206 [ref. 5385], Heemstra 1986:623 [ref. 5660], Paulin et al. 1989:197 [ref. 24556], Shcherbachev et al. 1989:165, 166 [ref. 36134], McAllister 1990:153 [ref. 14674], Hardy in Amaoka et al. 1990:284 [ref. 16024], Gomon et al. 1994:635 [ref. 22532], Andrew et al. 1995:19 [ref. 38009], Mundy & Moser 1997:241 [ref. 23514], Laboute & Grandperrin 2000:495 [ref. 25191], Hutchins 2001:37 [ref. 25847], Heemstra & Heemstra 2004:250 [ref. 28072], Gomon 2008:616 [ref. 30616], Randall 2007:299 [ref. 30952], Duffy & Ahyong 2015:114 [ref. 36167], Nión et al. 2016:49 [ref. 35565]). •Valid as Pentaceros richardsoni Smith 1844 -- (Follett & Dempster 1963:315 [ref. 6569], Mochizuki in Okamura et al. 1982:243, 384 [ref. 8256], Eschmeyer & Herald 1983:225 [ref. 9277], Mochizuki in Masuda et al. 1984:190 [ref. 6441], Kim 2012:94 [ref. 32039], Trnski 2015:1312 [ref. 34198], Brown et al. 2019:176 [ref. 36444], Heemstra 2022:431 [ref. 39850]). Current status: Valid as Pentaceros richardsoni Smith 1844. Pentacerotidae: Pentacerotinae. Distribution: Southern circumglobal. Habitat: marine.