Kessleria Jordan [D. S.] (ex Bogdanov) 1905:253 Fem. Scaphirhynchus fedtschenkoi Kessler 1872. Type by monotypy. Based on Kessleria of Bogdanov 1882:Caption (fig. 3) [ref. 499], which is not available, unpublished; see Fricke & Zhukov 2021:2 [ref. 38903]. Preoccupied by Kessleria Nowicki 1864 in Lepidoptera. Not replaced; see Myers 1940:35 [ref. 3118]. •Synonym of Pseudoscaphirhynchus Nikolski 1900 -- (Fricke & Zhukov 2021:2 [ref. 38903]). 1°Homonym. Current status: Synonym of Pseudoscaphirhynchus Nikolskii 1900. Acipenseridae.