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 Key to families of Carnivora in Korea 1 Limbs not modified; various tail lengths; carnassial well developed.............................................. 2 - Limbs modified to flippers; tail short; carnassials absent....................................................... 5 2 Tail longer than hind foot (except Lynx ); last upper molar not the longest; shearing ridge or cusps present............... 3 - Tail shorter than 50% of hind foot length; last upper molar elongated anteroposteriorly (longest tooth); sharp shearing ridge or cusps absent on molars............................................................................ Ursidae 3 Front foot 5 toes; hind foot 4 toes......................................................................... 4 - All feet with 5 toes............................................................................ Mustelidae 4 Claws retractable................................................................................. Felidae - Claws not retractable………………………………………………………..………………........ Canidae 5 Hind limbs rotated forward; pinnae small; postorbital process well developed……….............. Otariidae - Hind limbs always point posteriorly; pinnae absent; postorbital process absent…..…………… Phocidae