quadricornis, Ostracion Linnaeus [C.] 1758:331 [Systema Naturae, Ed. X v. 1; ref. 2787] India (in error). No types known. •Valid as Ostracium quadricornis Linnaeus 1758 -- (Herrera 1896:73 [ref. 39336]). •Valid as Lactophrys quadricornis (Linnaeus 1758) -- (Robins & Ray 1986:304 [ref. 23100], Boschung 1992:182 [ref. 23239], Cervigón 1992:377 [ref. 23827], Cervigón 1996:110 [ref. 24489]). •Valid as Acanthostracion quadricornis (Linnaeus 1758) -- (Tyler 1965:2 [ref. 39939], Tyler 1965:263 [ref. 39940], Matsuura in Uyeno et al. 1983:473 [ref. 14275], Smith 1986:891 [ref. 5712], Díaz de Astarloa & Fugueroa 1995:466 [ref. 22174], Aguilera 1998:53 [ref. 24221], Castro-Aguirre et al. 1999:509 [ref. 24550], Smith-Vaniz et al. 1999:352 [ref. 25013], Díaz de Astarloa et al. 2000:401 [ref. 24427], Schmitter-Soto et al. 2000:170 [ref. 27754], Gasparini & Floeter 2001:1647 [ref. 25634], Camargo & Isaac 2001:146 [ref. 27639], Matsuura 2003:1984 [ref. 27119], Menezes & Figueiredo in Menezes et al. 2003:109 [ref. 27192], Smith et al. 2003:70 [ref. 27621], Nelson et al. 2004:184 [ref. 27807], McEachran & Fechhelm 2005:915 [ref. 28815], García-Hernández et al. 2009:94 [ref. 37265], Page et al. 2013:190 [ref. 32708], Smith-Vaniz & Jelks 2014:87 [ref. 33341], Matsuura 2014:17 [ref. 33576], Lins Oliveira et al. 2015:188 [ref. 37485], Pinheiro et al. 2015:35 [ref. 34324], Carneiro et al. 2019:226 [ref. 37250], Robertson et al. 2020:160 [ref. 38098], Escobar-Sierra et al. 2021:78 [ref. 38844], Rotundo et al. in Marceniuk et al. 2021:688 [ref. 38945], Fermon et al. 2022:307 [ref. 39448] misidentified, Carvalho-Filho 2023:281 [ref. 40480], Page et al. 2023:169 [ref. 40505]). Current status: Valid as Acanthostracion quadricornis (Linnaeus 1758). Ostraciidae. Distribution: Western Atlantic: Massachusetts (U.S.A.) and Bermuda south to Argentina, including Gulf of Mexico and Caribbean Sea. Habitat: marine.