elongatus, Luxilus Kirtland [J. P.] 1840:339, Pl. 4 (fig. 1) [Boston Journal of Natural History v. 3 (nos 3-4) (art. 10, 17); ref. 18404] Tributaries of Mahoning River, Trumbull County, Ohio; Lake Erie near Cleveland, Ohio, U.S.A. No types known. Type catalog: Gilbert 1998:75 [ref. 23395]. Appeared first as Luxulus elongatus in Kirtland 1838:169, 193 [ref. 18399] without distinguishing features, genus spelling later corrected as above with accompanying description and illustration; available as above. •Valid as Clinostomus elongatus (Kirtland 1840) -- (Lee et al. 1980:148 [ref. 22416], Smith 1986:160 [ref. 22186], McAllister 1990:58 [ref. 14674], Page & Burr 1991:78 [ref. 18983], Stauffer et al. 1995:64 [ref. 23376], Gilbert 1998:75 [ref. 23395], Scott & Crossman 1998:399 [ref. 24570], Fuller et al. 1999:57 [ref. 25838], Lyons et al. 2000:22 [ref. 26594], Nelson et al. 2004:68 [ref. 27807], Bailey et al. 2004:73 [ref. 27882], Scharpf 2005:12 [ref. 28940], Page & Burr 2011:174 [ref. 31215], Page et al. 2013:69 [ref. 32708], Weyand & Piller 2020:[2] 564 [ref. 40515], Page et al. 2023:68 [ref. 40505]). Current status: Valid as Clinostomus elongatus (Kirtland 1840). Leuciscidae: Pogonichthyinae. Distribution: Eastern North America. Habitat: freshwater.