Where: Japan (41.2° N, 142.2° E: paleocoordinates 41.2° N, 142.2° E)
• coordinate stated in text
• small collection-level geographic resolution
When: Cyrtidosphaera reticulata nannofossil zone, Middle Pleistocene (0.8 - 0.1 Ma)
• "The core provided a continuous record from marine isotope stage (MIS) 18 (750 ka) to the present, a period that spanned the Brunhes normal polarity epoch (0–740 ka). The age model of this core was established through measurement of the stable oxygen isotopes of benthic foraminifera and calcareous nannofossil datums (Domitsu et al. 2011)." (Matsuzaki et al. 2014)
•"The stratigraphical interval between sample 31H-2 at 25–31 cm (275 mbsf) and 23H-5 at 54–60 cm (208 mbsf) in the 902-C9001C core. This zone covers the period from 516 to 357 ka." (Matsuzaki et al. 2014)
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithology not reported
Size class: microfossils
Collection methods: Repository: Department of Geology and Paleontology, Tohoku University Graduate School of Science, Sendai, Japan
Primary reference: K. M. Matsuzaki, N. Suzuki, H. Nishi, R. Takashima, Y. Kawate and T. Sakaii. 2014. Middle to Late Pleistocene radiolarian biostratigraphy in the water-mixed region of the Kuroshio and Oyashio currents, northeastern margin of Japan (JAMSTEC Hole 902-C9001C). Journal of Micropalaeontology 33:205-222 [B. Allen/B. Allen]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 233709: authorized by Bethany Allen, entered by Bethany Allen on 27.02.2024
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Protozoa | |
"Dimelissa monoceras" = Lithomelissa monoceras
"Dimelissa monoceras" = Lithomelissa monoceras Popofsky 1913 radiolarian | |
Plagiacantha ? panarium radiolarian | |
Eucyrtidium acuminata, "Theocorythium trachelium" = Eucyrtidium trachelius
Eucyrtidium acuminata radiolarian
"Theocorythium trachelium" = Eucyrtidium trachelius Ehrenberg 1861 radiolarian | |
Gondwanaria dogieli radiolarian | |
Lychnocanoma sakaii Morley and Nigrini 1995 radiolarian | |
Pseudodictyophimus gracilipes, "Cryptogyrus dubius" = Arachnocorys dubius
Pseudodictyophimus gracilipes radiolarian
"Cryptogyrus dubius" = Arachnocorys dubius Dogiel' and Reshetnyak 1952 radiolarian | |
Eucecryphalus cervus radiolarian
Cycladophora pliocenica radiolarian
Cycladophora davisiana Ehrenberg 1873 radiolarian | |
Lamprocyclas maritalis Haeckel 1887 radiolarian
Pterocorys clausus radiolarian | |
Zygocircus cf. piscicaudatus, "Acanthodesmia vinculata" = Lithocircus vinculatus
Zygocircus cf. piscicaudatus Popofsky 1913 radiolarian
"Acanthodesmia vinculata" = Lithocircus vinculatus Müller 1856 radiolarian | |
Ceratospyris ? borealis Bailey 1856 radiolarian | |
"Botryostrobus aquilonaris" = Artostobium, "Botryostrobus seriatus" = Artostobium
"Botryostrobus aquilonaris" = Artostobium radiolarian
"Botryostrobus seriatus" = Artostobium radiolarian | |
Botryocampe inflatum Bailey 1856 radiolarian | |
Axoprunum acquilonius radiolarian | |
Rhizosphaera mediana Nigrini 1967 radiolarian | |
Hexacontium pachydermum radiolarian | |
"Stylochlamydium ? venustum" = Perichlamydium venustum, Flustrella polygonia
"Stylochlamydium ? venustum" = Perichlamydium venustum Bailey 1856 radiolarian
Flustrella polygonia radiolarian | |
Spongosphaera streptacantha Haeckel 1861 radiolarian | |
Didymocyrtis tetrathalamus radiolarian | |
Phorticium polycladum, Phorticium pylonium, Larcopyle weddelium, Larcopyle buetschlii, Larcopyle cervicornis, Tetrapyle ex gr. octacantha
Phorticium polycladum Tan and Tchang 1976 radiolarian
Phorticium pylonium Haeckel 1887 radiolarian
Larcopyle weddelium radiolarian
Larcopyle buetschlii Dreyer 1889 radiolarian
Larcopyle cervicornis Haeckel 1887 radiolarian
Tetrapyle ex gr. octacantha Müller 1859 radiolarian | |
Spongodiscus resurgens, "Dictyocoryne muelleri" = Euchitonia muelleri, "Amphirhopalum virchowii" = Euchitonia virchowii, Spongaster tetras, Stylochlamydium ? perichlamydium, Dictyocoryne truncatum, Dictyocoryne profunda
Spongodiscus resurgens Ehrenberg 1854 radiolarian
"Dictyocoryne muelleri" = Euchitonia muelleri Haeckel 1862 radiolarian
"Amphirhopalum virchowii" = Euchitonia virchowii Haeckel 1862 radiolarian
Stylochlamydium ? perichlamydium radiolarian
Dictyocoryne truncatum radiolarian
Dictyocoryne profunda Ehrenberg 1873 radiolarian | |
Schizodiscus sp. Dogiel' and Reshetnyak 1952 radiolarian
Schizodiscus disymmetricus Dogiel' and Reshetnyak 1952 radiolarian
Schizodiscus japonicus Matsuzaki and Suzuki 2014 radiolarian
Amphisphaera tanzhiyuani Matsuzaki and Suzuki 2014 radiolarian | |
Heliodiscus cf. tunicatus O'Connor 1997 radiolarian | |
Spongurus cylindricus radiolarian | |
"Spongodiscus helioides" = Trochodiscus helioides
"Spongodiscus helioides" = Trochodiscus helioides Cleve 1899 radiolarian | |
Spongopyle osculosa radiolarian | |
Cenosphaera ? sp. Ehrenberg 1854 radiolarian | |
Thecosphaera aequorea radiolarian
Sphaeropyle langii Dreyer 1889 radiolarian
Actinomma boreale Cleve 1899 radiolarian
Actinomma leptodermum Jørgensen 1899 radiolarian | |
Siphonosphaera paraphoros Matsuzaki and Suzuki 2014 radiolarian | |
Cyrtidosphaera reticulata Haeckel 1861 radiolarian |