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Zeokova sp.
genus Zelkova Spach (1841)
- Modern species: Late Cretaceous - Present (89.3 - 0.0 Ma)
- Distribution
- Eocene: Hokkaido
- Oligocene: Nagano
- Miocene: Hokkaido, Akita, Miyagi, Niigata, Ishikawa, Fukui, Ibaraki, Saitama, Gifu, Hyogo, Hiroshima, Tottori, Yamaguchi
- Miocene-Pliocene: Tottori, Oita
- Pliocene: Miyagi, Gifu, Mie, Kyoto, Hyogo, Okayama, Tottori
- Pliocene-Pleistocene: Mie, Shimane, Kagawa
- Pleistocene: Nagano, Tokyo
- Holocene: Shimane
- Investigation in progress: Yamagata, Oita