YTZ-M, Torinoko Block: Late Tithonian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polycystinea - Nassellaria - Pseudodictyomitridae
Loopus primitivus (Matsuoka and Yao 1985)
Polycystinea - Nassellaria - Eucyrtidiidae
Pseudoeucyrtis reticularis Matsuoka and Yao 1985
Solenotryma ichikawai Matsuoka and Yao 1985
Polycystinea - Nassellaria - Xitidae
Xitus gifuensis Mizutani 1981
Polycystinea - Nassellaria - Syringocapsidae
Polycystinea - Nassellaria - Spongocapsulidae
Polycystinea - Nassellaria - Parvicingulidae
Tethysetta mashitaensis (Mizutani 1981)
Parvicingula citae Pessagno 1977
Wrangellium okamurai (Mizutani 1981)
Tethysetta boesii (Parona 1890)
Polycystinea - Nassellaria - Canoptidae
Cinguloturris cylindra Kemkin and Rudenko 1993
Polycystinea - Nassellaria - Eucyrtidiellidae
Eucyrtidiellum ptyctum (Riedel and Sanfilippo 1974)
Polycystinea - Nassellaria - Archaeodictyomitridae
Archaeodictyomitra excellens (Tan Sin Hok 1927)
Thanarla brouweri (Tan Sin Hok 1927)
Polycystinea - Nassellaria - Unumidae
Protunuma japonicus Matsuoka and Yao 1985
Polycystinea - Nassellaria - Hsuidae
Hsuum arabicum Dumitrica 1997
Polycystinea - Nassellaria - Williriedellidae
Zhamoidellum ovum Dumitrica 1970
Polycystinea - Spumellaria - Pantanelliidae
Vallupus laxus Yang and Pessagno 1989
Vallupus hopsoni Pessagno and Blome 1984
Polycystinea - Spumellaria - Archaeospongoprunidae
Polycystinea - Spumellaria - Parvivaccidae
Acastea diaphorogona (Foreman 1973)
Polycystinea - Spumellaria - Angulobracchiidae
Deviatus diamphidius (Foreman 1973)
Polycystinea - Spumellaria - Orbiculiformidae
Polycystinea - Spumellaria - Pseudoaulophacidae
Protozoa - Entactinaria - Saturnalidae
see common names

Geography
Country:Japan
Coordinates: 36.8° North, 140.3° East (view map)
Paleocoordinates:56.9° North, 149.0° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:hand sample
Time
Period: Jurassic Epoch: Late Jurassic
Stage: Tithonian 10 m.y. bin: Jurassic 6
Key time interval: Late Tithonian
Age range of interval: 145.06 - 143.1 m.y. ago
Stratigraphy
Local section:YTZ Local bed:M
Local order:bottom to top
Stratigraphic resolution:bed
Stratigraphy comments: SGM (sandstone-gray mudstone) unit
Lithology and environment
Primary lithology: lithified "shale"
Lithology description: dark green shale
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:microfossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:131590
Authorizer:W. Kiessling Enterer:U. Merkel
Research group:micropaleontology
Created:2012-07-26 22:03:59 Last modified:2025-02-22 15:12:02
Access level:the public Released:2012-07-26 22:03:59
Creative Commons license:CC0
Reference information

Primary reference:
42460. N. Hori. 1999. Latest Jurassic radiolarians from the northeastern part of the Torinoko Block, Yamizo Mountains, central Japan. Science Reports of the Institute of Geoscience University of Tsukuba, Section B: Geological Sciences 20:47-114 [W. Kiessling/U. Merkel]