 Later, it was reassigned to "Brachypterygius" because differences between the two species were considered insufficient to warrant separate genera, or even species.Efimov, 1998 named a new genus of ichthyosaur, "Otschevia pseudoscythica" on the basis of a single specimen (the holotype) from the "Pseudoscythia" Zone (late Tithonian stage of the Late Jurassic) of Ulyanovsk, Volga region, Russia.Later, Arkangelsky, 1998 described "Brachypterygius zhuravlevi" from a Tithonian-stage locality in Saratov, Russia, subsequently referring it to "Otschevia zhuravlevi".