Zenion Jordan [D. S.] & Evermann [B. W.] 1896:418 Neut. Cyttus hololepis Goode & Bean 1896. Type by original designation (also monotypic). Heemstra 1986 [ref. 5660] places in family Zeniontidae. Macrourocyttidae is an older family-group name (see Paxton et al. 1989:387 [ref. 12442]). The family name spelling was changed on 22 Feb. 2014. •Valid as Zenion Jordan & Evermann 1896 -- (Machida in Masuda et al. 1984:118 [ref. 6441], Heemstra 1986:441 [ref. 5660], Paxton et al. 1989:387 [ref. 12442], Heemstra 1999:2258 [ref. 24791], Tyler et al. 2003:36 [ref. 26742], Paxton et al. 2006:796 [ref. 28995], Fricke et al. 2015:6 [ref. 33930], Grande et al. 2018:32 [ref. 35804], Fricke et al. 2018:119 [ref. 35805], Brown et al. 2019:160 [ref. 36444], Fricke et al. 2019:88 [ref. 36673]). Current status: Valid as Zenion Jordan & Evermann 1896. Zeniontidae.