Katsuyama (UF) Section, Inuyama, UFI20: Middle Toarcian - Late Toarcian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Protozoa - Entactinaria - Saturnalidae
Protozoa - Xiphostylidae
Tripocyclia spp. Haeckel 1881
Polycystinea - Spumellaria - Pantanelliidae
Zartus spp. Pessagno and Blome 1980
Polycystinea - Nassellaria
Polycystinea - Nassellaria - Ultranaporidae
Napora spp. Pessagno 1977
Polycystinea - Nassellaria - Hsuidae
see common names

Geography
Country:Japan
Coordinates: 35.4° North, 137.0° East (view map)
Paleocoordinates:45.4° North, 161.1° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Jurassic Epoch: Early Jurassic
Stage: Toarcian 10 m.y. bin: Jurassic 3
Key time interval: Middle Toarcian - Late Toarcian Zone:  Hexasaturnalis hexagonus assemblage-zone
Age range of interval: 182.9 - 174.7 m.y. ago
Stratigraphy
Local section:Katsuyama (UF) Local bed:UF20
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:red or brown lithified chert
Secondary lithology: lithified mudstone
Includes fossils?Y
Environment:basinal (siliceous) Tectonic setting:deep ocean basin
Taphonomy
Modes of preservation:body,original silica
Size of fossils:microfossils
Preservation of anatomical detail:medium
Collection methods and comments
Collection methods:chemical,hydroflouric
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:120192
Authorizer:J. Pálfy Enterer:A. Kocsis
Modifier:A. Kocsis Research group:micropaleontology
Created:2011-11-08 16:55:56 Last modified:2025-02-22 15:12:02
Access level:the public Released:2011-11-08 16:55:56
Creative Commons license:CC0
Reference information

Primary reference:
38461. R. Hori. 1990. Lower Jurassic Radiolarian Zones of SW Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 159:562-586 [J. Pálfy/A. Kocsis]