F-05, Minowa quarry, Kuzuu: Spathian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa - Entactinaria - Palaeoscenidiidae
[entered as Paraentactinia nakatsugawaensis]
Protozoa - Entactinaria - Hindeosphaeridae
Pseudostylosphaera sp. Kozur and Mostler 1981
Polycystinea - Nassellaria - Tripedurnulidae
Tripedocorbis sp. Dumitrica 1991
Polycystinea - Spumellaria
Spumellaria indet. Ehrenberg 1875
Polycystinea - Spumellaria - Oertlispongidae
Paroertlispongus sp. Kozur and Mostler 1981
see common names

Geography
Country:Japan
Coordinates: 36.4° North, 139.6° East (view map)
Paleocoordinates:3.4° North, 136.3° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:hand sample
Time
Period: Triassic Epoch: Early Triassic
Stage: Olenekian 10 m.y. bin: Triassic 1
Key time interval: Spathian Other zone:  Paraentactinia nakatsugawaensis
Age range of interval: 248.6 - 247 m.y. ago
Stratigraphy
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified radiolarite
Lithology description: grey to red bedded chert
Environment:basinal (siliceous)
Taphonomy
Modes of preservation:body
Size of fossils:microfossils
Preservation of anatomical detail:poor
Collection methods and comments
Collection methods:chemical,hydroflouric,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:95328
Authorizer:W. Kiessling Enterer:W. Kiessling
Research group:micropaleontology
Created:2010-04-12 11:32:20 Last modified:2025-02-22 15:12:02
Access level:the public Released:2010-04-12 11:32:20
Creative Commons license:CC0
Reference information

Primary reference:
32435. J. Isogawa, Y. Aita, and T. Sakai. 1998. Early Triassic radiolarians from the bedded chert in the Minowa quarry, Kuzuu Town, Tochigi Prefecture. News of Osaka Micropaleontologists, Special Volume 11:81-93 [W. Kiessling/W. Kiessling]