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Radiozoa, Radiolaria, Radiolarian(s)
phylum Radiozoa Cavalier-Smith, 1987
- Classification
- kingdom Chromista, infrakingdom Rhizaria
- Distribution
- Paleozoic: Hokkaido, Aomori, Aichi, Shiga
- Ordovician: Gifu
- Silurian: Gifu
- Permian: Nagano, Fukui
- Mesozoic: Aichi
- Triassic: Aomori, Nagano, Tochigi, Aichi, Shiga, Tokushima, Ehime
- Triassic-Jurassic: Iwate
- Jurassic: Nagano, Tochigi, Saitama, Shizuoka, Gifu, Mie, Nara, Wakayama
- Jurassic-Cretaceous: Hokkaido, Yamagata, Tokushima
- Cretaceous: Hokkaido, Nagano, Tokyo, Shizuoka, Nara, Tokushima
- Miocene: Aomori, Yamagata, Fukushima, Nagano, Tochigi, Chiba, Kanagawa, Shizuoka
- Pliocene-Pleistocene: Hokkaido
- Investigation in progress: Niigata, Gunma, Kyoto, Ehime
- Subtaxa
- Acanthocircus bispinus
- Amphipyndax tylotus
- Archaeodictyomitra, genus
- Archaeohagiastrum munitum
- Archaeosemantis cristianensis
- Archaeosemantis venusta
- Archaeospongoprunum, genus
- Astrocentrus, genus
- Belleza decora
- Calocycletta costata
- Capnuchosphaera, genus
- Ceratocyrtis, genus
- Cryptostephanidium, genus
- Cyrtocapsa, genus
- Cyrtocapsella, genus
- Diartus hughesi
- Dictyomitra koslovae
- Dictyomitrella, genus
- Emiluvia, genus
- Eptingium, genus
- Eucyrtidiellum, genus
- Follicucullus, genus
- Gorgansium, genus
- Guexella nudata
- Haeckelicyrtium breviora
- Hexacontium, genus
- Hinedorcus alatus
- Hiscocapsa robusta
- Hozmadia gifuensis
- Hsuum, genus
- Hymeniastrum, genus
- Japonocapsa fusiformis
- Kilinora spiralis
- Ladinocampe japonica
- Laxtorum jurassicum
- Lithostrobus genus
- Lophophaena, genus
- Lychnocanoma, genus
- Napora, genus
- Novixitus, genus
- Orbiculiforma, genus
- Palaeoactinommids
- Palinandromeda, genus
- Pantanellium, genus
- Parahsuum simplum
- Parentactinia nakatsugawaensis
- Parvicingula, genus
- Pentactinocarpus fusiformis
- Perispyridium, genus
- Plafkerium, genus
- Podobursa, genus
- Protunuma, genus
- Pseudoristola, genus
- Quadricaulis, genus
- Rhizosphaera, genus
- Saitoum, genus
- Sethocapsa, genus
- Solenotryma, genus
- Spinotriassocampe annulata
- Spongodiscus biconcavus
- Stichocapsa, genus
- Tholospyris, genus
- Tiborella florida
- Triactoma, genus
- Triassocampe, genus
- Tricolocapsa, genus
- Williriedellum tetragona
- Xiphospira, genus
- Yeharaia cornigera