Basionym: Navicula norae Metzeltin, Lange-Bertalot & García-Rodríguez 2005. Iconographia Diatomologica 15, p. 138. Replaced synonym: Cymbella (Encyonema) grossestriata O. Müller var. recta Frenguelli 1938. Revista del Museo de La Plata, nueva serie 1, Paleontologia 5, p. 303, lam. I, fig. 20. Synonym: Seminavis recta Talgatti et Torgan. Talgatti et al. 2014. Fottea, Olomouc, 14(2): 143, nom. illeg. Type:—ARGENTINA: Matanza river estuary in Buenos Aires, 12 February 1928 (LP 403) Lectotype, designated here:—ARGENTINA: Matanza river estuary in Buenos Aires, 12 February 1928 (One individual in preparation LP 403, illustrated in Talgatti et al. 2014: Figs 7b, 7c).