''Pseudorca'' is a genus of

cetacea Cetacea (; , ) is an infraorder of aquatic mammals belonging to the order Artiodactyla that includes whales, dolphins and porpoises. Key characteristics are their fully aquatic lifestyle, streamlined body shape, often large size and exclusively c ...

ns with three members which include '' Pseudorca yokoyamai'', '' Pseudorca yuanliensis'' and '' Pseudorca crassidens'', of which ''P. crassidens'' (commonly known as the false killer whale) is the only extant member. ''Pseudorca yuanliensis'' is found in Pliocene layers in Yuanli,

Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia. The main geography of Taiwan, island of Taiwan, also known as ''Formosa'', lies between the East China Sea, East and South China Seas in the northwestern Pacific Ocea ...

, while ''Pseudorca yokoyamai'' is found in both Pliocene and Pleistocene rocks in

Japan Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea ...

References

Globicephalinae Cetacean genera Mammal genera with one living species Taxa named by Johannes Theodor Reinhardt {{Cetacean-stub