guggenheim, Squatina Marini [T. L.] 1936:23, Fig. 2 [Physis (Buenos Aires) v. 12; ref. 13716] Necochea, Buenos Aires Province, Argentina. Holotype (unique): MACN 938. Type catalog: Braga & Piacentino 1994:101 [ref. 23697], Soto & Mincarone 2004:84 [ref. 37067]. •Synonym of Squatina argentina (Marini 1930) -- (Compagno 1984:142 [ref. 6474]). •Valid as Squatina guggenheim Marini 1936 -- (Vooren & da Silva 1992:595 [ref. 21060], Compagno 1999:475 [ref. 25589], Soto 2001:66, 97 [ref. 26637], Gadig & Gomes in Menezes et al. 2003:27 [ref. 27192], Castro-Aguirre et al. 2007:1039 [ref. 29408], Last & White 2008:2 [ref. 29746], Stelbrink et al. 2009:[3] 397 [ref. 41378], Mabragaña et al. 2011:table S2 [ref. 31800], Vaz & Carvalho 2013:19 [ref. 32825], Weigmann 2016:70 [ref. 34211], Acero P. et al. 2016:583 [ref. 34531], Estalles et al. 2016:1 [ref. 34759], Petry et al. 2016:299 [ref. 34966], Nión et al. 2016:21 [ref. 35565], Spier et al. 2018:4 [ref. 36103], Long et al. 2021:126 [ref. 38922], Bunholi et al. 2022:[4] [ref. 39163], Carvalho-Filho 2023:294 [ref. 40480], Hoff et al. 2023:5 [ref. 40463], Gadig et al. 2024:15 [ref. 40775]). Current status: Valid as Squatina guggenheim Marini 1936. Squatinidae. Distribution: Southwestern Atlantic: Rio de Janeiro (Brazil) south to northern Argentina. Habitat: marine.