JAMSTEC Hole 902-C9001C, P. depressum Zone: Middle Pleistocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polycystinea - Spumellaria - Sponguridae
Polycystinea - Nassellaria - Ultranaporidae
unclassified
Polycystinea - Spumellaria - Spongodiscidae
Polycystinea - Spumellaria - Pyloniidae
Phorticium polycladum Tan and Tchang 1976
Phorticium pylonium Haeckel 1887
Polycystinea - Spumellaria - Coccodiscidae
Polycystinea - Spumellaria
Polycystinea - Spumellaria - Litheliidae
Lithelius nautiloides Popofsky 1908
Polycystinea - Spumellaria - Heliodiscidae
Polycystinea - Spumellaria - Stylosphaeridae
Polycystinea - Spumellaria
Polycystinea - Spumellaria - Larnacillidae
Polycystinea - Spumellaria - Sponguridae
Polycystinea - Spumellaria
Polycystinea - Spumellaria - Spongodiscidae
Spongodiscus resurgens Ehrenberg 1854
Dictyocoryne muelleri (Haeckel 1862)
Amphirhopalum virchowii (Haeckel 1862)
Dictyocoryne profunda Ehrenberg 1873
Polycystinea - Nassellaria - Ultranaporidae
Lychnocanoma sakaii Morley and Nigrini 1995
Polycystinea - Nassellaria - Eucyrtidiidae
Polycystinea - Nassellaria - Eucyrtiidae
Pterocanium depressum (Ehrenberg 1873)
Polycystinea - Nassellaria - Plagiacanthidae
Polycystinea - Nassellaria - Lophophaenidae
Ceratocyrtis spinosiretis (Takahashi 1991)
Polycystinea - Nassellaria - Artostrobiidae
Polycystinea - Nassellaria - Acanthodesmiidae
Polycystinea - Nassellaria - Theopiliidae
Cycladophora davisiana Ehrenberg 1873
Polycystinea - Nassellaria - Cannobotryidae
Botryocampe inflatum (Bailey 1856)
Polycystinea - Nassellaria - Triospyrididae
Polycystinea - Nassellaria - Pterocorythidae
Protozoa - Actinommidae
Sphaeropyle langii Dreyer 1889
Actinomma boreale Cleve 1899
Actinomma leptodermum (Jørgensen 1899)
Protozoa
Protozoa - Collodaria
Protozoa - Ommatodiscidae
Protozoa - Entactinaria - Rhizosphaeridae
Rhizosphaera mediana (Nigrini 1967)
Protozoa - Entactinaria - Hexalonchidae
see common names

Geography
Country:Japan
Coordinates: 41.2° North, 142.2° East (view map)
Paleocoordinates:
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period: Quaternary Epoch: Pleistocene
Stage: Chibanian 10 m.y. bin: Cenozoic 6
Key time interval: Middle Pleistocene Nannofossil zone:  Pterocanium depressum
Age range of interval: 0.774 - 0.129 m.y. ago
Age estimate: 238 to 209 Ka (other)
Stratigraphy
Stratigraphic resolution:group of beds
Stratigraphy comments: "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 18H-4 at 42–48 cm (163.04 mbsf) and 13H-6 at 40.5–49.5 cm (118 mbsf) in the 902-C9001C core. This zone covers the period from 238 to 209 ka." (Matsuzaki et al. 2014)
Lithology and environment
Primary lithology: not reported
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:microfossils
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Collection method comments: Repository: Department of Geology and Paleontology, Tohoku University Graduate School of Science, Sendai, Japan
Metadata
Database number:233711
Authorizer:B. Allen Enterer:B. Allen
Created:2024-02-27 03:00:15 Last modified:2025-02-22 15:12:02
Access level:the public Released:2024-02-27 03:00:15
Creative Commons license:CC0
Reference information

Primary reference:
87618. 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]