alexandri, Acipenser (Antaceus) Duméril [A. H. A.] 1867:183, Pl. 15 (figs. 1, 1a-b) [Nouvelles Archives du Muséum d'Histoire Naturelle, Paris v. 3; ref. 14072] San Francisco, California, U.S.A. Holotype (unique): MCZ (whereabouts unknown). Also appeared in Duméril 1870:239, Pl. 15 (figs. 1, 1a-b) [ref. 1147]. •Synonym of Acipenser acutirostris Ayres 1854 -- (Okada 1961:282 [ref. 6363]). •Synonym of Acipenser medirostris Ayres 1854. •Synonym of Sinosturio medirostris (Ayres 1854). Current status: Synonym of Sinosturio medirostris (Ayres 1854). Acipenseridae. Habitat: freshwater, brackish, marine.