Koguchi, Kuma 7, sample BC 27: Ladinian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa - Entactinaria - Hindeosphaeridae
Pseudostylosphaera sp. Kozur and Mostler 1981
Pseudostylosphaera longispinosa Kozur and Mostler 1981
Pseudostylosphaera japonica (Nakaseko and Nishimura 1979)
Pseudostylosphaera compacta (Nakaseko and Nishimura 1979)
Protozoa - Entactinaria - Pentactinocarpidae
Polycystinea - Spumellaria - Oertlispongidae
Polycystinea - Nassellaria - Ruesticyrtiidae
Yeharaia elegans Nakaseko and Nishimura 1979
Triassocampe deweveri (Nakaseko and Nishimura 1979)
Polycystinea - Nassellaria - Monicastericidae
Polycystinea - Nassellaria - Planispinocyrtiidae
see common names

Geography
Country:Japan
Coordinates: 32.3° North, 130.6° East (view map)
Paleocoordinates:6.8° North, 131.2° East (Wright 2013)
Geographic resolution:hand sample
Time
Period: Triassic Epoch: Middle Triassic
Stage: Ladinian 10 m.y. bin: Triassic 2
Key time interval: Ladinian
Age range of interval: 241.464 - 237 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 in volcaniclastic breccia
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:77120
Authorizer:W. Kiessling Enterer:W. Kiessling
Research group:micropaleontology
Created:2007-12-21 04:33:47 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2009-12-21 04:33:47
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]