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Pterocarya sp., Wing nut(s)

genus Pterocarya Kunth (1824)

• Modern species: Paleocene - Present (56.8 - 0.0 Ma)

• Classification
• kingdom Plantae, Angiosperms, order Fagales, family Juglandaceae

• Distribution
• Miocene: Hokkaido, Akita, Niigata, Tochigi, Saitama, Aichi, Gifu, Hyogo, Kagawa
• Miocene-Pliocene: Tottori
• Pliocene: Tokushima
• Pliocene-Pleistocene: Kagawa
• Pleistocene: Niigata, Nagano, Ishikawa, Tochigi, Saitama, Chiba, Aichi, Hiroshima
• Holocene: Aichi
• Investigation in progress: Yamagata

• Subtaxa
• P. asymmetrosa
• P. ezoana
• P. protostenoptera
• P. rhoifolia, Japanese wingnut