kaufmanni, Scaphirhynchus Kessler [K. F.] (ex Bogdanov) 1877:194 [The Aralo-Caspian Expedition; ref. 2597] Lower Amu-Darya River, Uzbekistan. Syntypes: SPSU uncat. (1), ZIN 2707 (1, lost), ZMMU P-1456 (1). Type catalog: Svetovidova 1978:256 [ref. 9011], Vasil'eva et al. 2001:15 [ref. 25714], Zhidkov et al. 2019:402 [ref. 37215].. Appeared first in Bogdanov 1874:XLVII [ref. 19624] with no distinguishing features. •Valid as Pseudoscaphirhynchus kaufmanni (Kessler 1877) -- (Berg 1948:104 [ref. 12882], Coad 1981:8 [ref. 22348], Salnikov et al. 1996:10 [ref. 22563], Mayden & Kuhajda 1996:261 [ref. 22395], Bemis et al. 1997:37 [ref. 22871], Hilton et al. 2011:136 [ref. 31407], Zhidkov et al. 2019:402 [ref. 37215], Çiçek et al. 2023:9 [ref. 40326]). Current status: Valid as Pseudoscaphirhynchus kaufmanni (Kessler 1877). Acipenseridae. Distribution: Central Asia: endemic to Amu Darya River system (Afghanistan, Turkmenistan, Uzbekistan). Habitat: freshwater, brackish.