Mammals of Korea: a review of their taxonomy, distribution and conservation status Author Jo, Yeong-Seok Author Baccus, John T. Author Koprowski, John L. text Zootaxa 2018 2018-11-19 4522 1 1 216 journal article 27944 10.11646/zootaxa.4522.1.1 58e0c7c5-75ec-4b1b-beb0-d01527f710f9 1175-5326 2610198 C24EFA8A-A5A0-4B06-A0A9-632F542B9529 Genus Lagenorhynchus Gray, 1846 Of the six species recognized in the genus, only L. obliquidens inhabits the North Pacific Ocean. Based on cytochrome b gene analysis, LeDuc et al. (1999) regarded Lagenorhynchus as polyphyletic and suggested splitting the genus into three genera, Lagenorhynchus Gray, 1846 ; Leucoplearus Gray, 1866; and Sagmatias Cope, 1866 . LeDuc et al. (1999) recommended placing L. obscurus , L. obliquidens , L. cruciger , and L. australis in the Genus Sagmatias . However, Mead and Brownell (2005) proposed relegating two of the genera as a subgenera of Lagenorhynchus . However, Sagmatias appeared polyphyletic by analysis of nuclear genes ( McGowen et al . 2009 ). Lagenorhynchus obscurus and L. obliquidens were separated from the L. cruciger — L. australis group, which were more closely related to Cephalorhynchus . Although some taxonomists recognized Sagmatias as a distinct genus ( Murakami et al . 2014 ), the IUCN Red List still uses the Mead and Brownell (2005) taxonomy for Lagenorhynchus ( Hammond et al . 2012 ) . Since marine biologists have not reached an agreement on this genus, we have followed the taxonomy of Mead and Brownell (2005) .