Pseudoscaphirhynchus Nikolskii [A. M.] 1900:257 Masc. Pseudoscaphirhynchus rossikowi Nikolskii 1900. Type by monotypy. On Official List (Opinion 971). •Valid as Pseudoscaphirhynchus Nikolskii 1900 -- (Bailey & Cross 1954:173 [ref. 5358], Mayden & Kuhajda 1996:241 [ref. 22395], Bemis et al. 1997:37 [ref. 22871], Birstein et al. 2002:287 [ref. 26021], Fricke & Zhukov 2021:3 [ref. 38903], Brownstein & Near 2025:16 [ref. 42105]). Current status: Valid as Pseudoscaphirhynchus Nikolskii 1900. Acipenseridae.