Lower Pliocene and, probably, Upper Miocene [details]
Upper Pliocene to Lower Pleistocene [details]
Lower Pliocene [details]
Japan, northern Honshu, Akita Prefecture, Omori Town, Kinonezaka, Yasawagi [details]
Japan, northern Honshu, Akita Prefecture, Yamamoto District, Fujisato [details]
Japan, northwestern Honshu Island, Niigata Prefecture, Higashikubiki District, Higashi River in vicinities of ... [details]
Russia, southeastern Sakhalin Island, Poronaisk District, vicinity of Tikhmenevo-Vakhrushevo [= "Naikawa Beds of ... [details]