Takahashi, Y.; Aiba, H. 2023. Winged formicine ant fossils (Hymenoptera, Formicidae) from the Chibanian (Middle Pleistocene) Shiobara Group, Tochigi Prefecture, Japan. The Journal of the Geological Society of Japan 129 (1):573-578. [online early] 10.5575/geosoc.2023.0023 PDF