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 Kogia Gray, 1846 Kogia is often treated as a distinct Family, Kogiidae Gill, 1871 , but is retained in the same phylogenetic group as the sperm whale (Genus Physeter ) based on cytochrome b analysis ( May-Collado & Agnarsson 2006 ). We followed the taxonomy by Mead and Brownell (2005) . Two species are recognized, and both have a worldwide distribution.