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Trapa sp.

genus Trapa Linnaeus (1753)

• Modern species: Late Cretaceous - Present (84.9 - 0.0 Ma)

• Classification
• kingdom Plantae, Angiosperms, order Myrtales, family Lythraceae

• Distribution
• Miocene: Hiroshima
• Pliocene: Yamagata, Tokyo, Aichi
• Pliocene-Pleistocene: Mie, Kagawa
• Pleistocene: Hokkaido, Yamagata, Niigata, Ibaraki, Tokyo, Chiba, Kanagawa, Shizuoka, Mie, Shiga, Kyoto, Hiroshima
• Investigation in progress: Toyama, Mie, Osaka

• Subtaxa
• T. discoidpoda
• T. incisa
• T. japonica
• T. macropoda
• T. mammillifera
• T. maximowiczii
• T. natans?
• T. natans var. pumila
• T. platycerata