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Hexacorallia

subclass Hexacorallia Haeckel, 1896

• Modern species: Cambrian - Permian (542.0 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Cnidaria, class Anthozoa

• Distribution
• Paleozoic: Aomori, Nagano, Ibaraki, Saitama
• Silurian: Iwate, Fukui, Gifu, Wakayama, Tokushima, Ehime, Kochi
• Silurian-Devonian: Ehime
• Devonian: Fukui, Gifu
• Carboniferous: Iwate, Fukushima, Gifu, Nara, Hiroshima, Yamaguchi
• Carboniferous-Permian: Niigata, Yamaguchi
• Permian: Miyagi, Fukushima, Tochigi, Saitama, Gifu, Mie, Hiroshima, Yamaguchi, Ehime, Kochi
• Mesozoic: Nagano
• Triassic: Nara
• Jurassic: Hokkaido, Aomori, Miyagi, Tokyo, Mie, Nara
• Cretaceous: Hokkaido, Iwate, Miyagi, Yamanashi
• Eocene-Oligocene: Fukuoka
• Miocene: Aomori, Miyagi, Fukushima, Tochigi, Chiba, Kanagawa, Aichi, Gifu, Okayama, Hiroshima, Tottori, Shimane
• Pliocene: Niigata
• Pliocene-Pleistocene: Hokkaido
• Pleistocene: Hokkaido, Niigata, Chiba
• Holocene: Chiba

• Subtaxa
• Heliopora, genus
• Rugosa, order, Tetracorallia
• Scleractinia, order, Stony coral
• Tabulata, order, Tabulate coral