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Quercus sp., Oak(s)

genus Quercus Linnaeus (1753)

• Modern species: Late Cretaceous - Present (99.7 - 0.0 Ma)

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

• Distribution
• Cretaceous: Okayama
• Paleogene-Neogene: Nagano
• Paleocene: Hiroshima
• Eocene: Hokkaido, Yamaguchi, Fukuoka
• Oligocene: Kagawa
• Miocene: Hokkaido, Akita, Miyagi, Fukushima, Niigata, Nagano, Ishikawa, Ibaraki, Tokyo, Gifu, Mie, Kyoto, Hyogo, Okayama, Hiroshima, Tottori, Yamaguchi, Kagawa, Ehime
• Miocene-Pliocene: Tottori, Oita
• Pliocene: Miyagi, Gifu, Mie, Okayama
• Pliocene-Pleistocene: Nagano, Saitama, Shimane, Kagawa
• Pleistocene: Hokkaido, Aomori, Iwate, Yamagata, Fukushima, Niigata, Nagano, Gunma, Tochigi, Tokyo, Chiba, Shizuoka, Aichi, Mie, Kyoto, Hirosima
• Holocene: Miyagi, Yamagata, Toyama, Chiba, Shizuoka, Aichi, Kyoto, Osaka, Shimane, Yamaguchi
• Investigation in progress: Ishikawa, Mie

• Subtaxa
• Q. acuta, Japanese evergreen oak
• Q. acutissima, Sawtooth oak
• Q. aliena, Oriental white oak
• Q. (Cyclobalanopsis), subgenus
• Q. dentata, Japanese emperor oak, Daimyo oak
• Q. gilva, Red-bark oak
• Q. inouei
• Q. (Lepidobalanus), subgenus
• Q. longinux
• Q. mandraliscae
• Q. miovariabilis
• Q. mongolica subsp. crispula
• Q. myrsinaefolia, Bamboo-leaf oak
• Q. nathorstii
• Q. praegilva
• Q. protodentata
• Q. protosalicina
• Q. protoserrata
• Q. rubroidea
• Q. salicina
• Q. serrata
• Q. subvariabilis
• Q. variabilis, Chinese cork oak