Koguchi, Kuma 7, sample BC 11: Anisian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polycystinea - Nassellaria - Ruesticyrtiidae
Annulotriassocampe cf. campanilis Kozur and Mostler 1994
Protozoa - Entactinaria - Hindeosphaeridae
Pseudostylosphaera sp. Kozur and Mostler 1981
Pseudostylosphaera compacta (Nakaseko and Nishimura 1979)
Pseudostylosphaera japonica (Nakaseko and Nishimura 1979)
Pseudostylosphaera longispinosa Kozur and Mostler 1981
Pseudostylosphaera spinulosa (Nakaseko and Nishimura 1979)
see common names

Geography
Country:Japan
Coordinates: 32.3° North, 130.6° East (view map)
Paleocoordinates:4.9° North, 129.4° East (Wright 2013)
Geographic resolution:hand sample
Time
Period: Triassic Epoch: Middle Triassic
Stage: Anisian 10 m.y. bin: Triassic 2
Key time interval: Anisian
Age range of interval: 247 - 241.464 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Stratigraphy comments: Age based on radiolarians and conodonts
Lithology and environment
Primary lithology: lithified chert
Lithology description: ribbon chert
Environment:basinal (siliceous) Tectonic setting:deep ocean basin
Taphonomy
Size of fossils:microfossils
Preservation of anatomical detail:medium
Collection methods and comments
Collection methods:chemical,hydroflouric,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:77115
Authorizer:W. Kiessling Enterer:W. Kiessling
Research group:micropaleontology
Created:2007-12-21 03:40:51 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2009-12-21 03:40:51
Creative Commons license:CC0
Reference information

Primary reference:
26108. T. Onoue and H. Sano. 2007. Triassic mid-oceanic sedimentation in Panthalassa Ocean: Sambosan accretionary complex, Japan. Island Arc 16(1):173-190 [W. Kiessling/W. Kiessling]