Rhizoprion Ogilby [J. D.] 1915:132 Masc. Carcharias (Scoliodon) crenidens Klunzinger 1880. Type by original designation (also monotypic). Objectively invalid; preoccupied by Rhizoprion Jourdan 1861 in mammals, replaced by Rhizoprionodon Whitley 1929. •In the synonymy of Rhizoprionodon Whitley 1929 -- (Springer 1964:590 [ref. 3494], Compagno 1984:524 [ref. 6846], Cappetta 1987:126 [ref. 6348], Compagno 1988:294 [ref. 13488], Paxton et al. 1989:83 [ref. 12442], Castro-Aguirre et al. 1999:44 [ref. 24550], Hoese et al. 2006:106 [ref. 29001], Kottelat 2013:22 [ref. 32989]). 1°Homonym. Current status: Synonym of Rhizoprionodon Whitley 1929. Carcharhinidae.