Kurusu (KU) Section, Inuyama, KU (a) 5: Middle Toarcian - Late Toarcian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polycystinea - Spumellaria - Pantanelliidae
Trillus sp. Pessagno and Blome 1980
Polycystinea - Nassellaria - Parvicingulidae
Gorican et al. 2006
Polycystinea - Nassellaria - Hsuidae
Protozoa - Entactinaria - Saturnalidae
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:small collection
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:Kurusu Local bed:KU (a) 5
Lithology and environment
Primary lithology:gray,green,red lithified chert
Secondary lithology: lithified mudstone
Lithology description: This section is composed of a rhythmically interbedded sequence of chert and mudstone. The thickness of individual chert layer varies from 1 to 7 cm (mostly 4-4,5 cm), and the mudstone layer is very thin (mostly 1-3mm). The chert exhibits a wide range of color, varying from mostly gray and green to partly red. In these chert layers, some sedimentary structures such as convolute lamination are observed.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:microfossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:120071
Authorizer:J. Pálfy Enterer:A. Kocsis
Created:2011-11-06 20:21:25 Last modified:2025-02-22 15:12:02
Access level:the public Released:2011-11-06 20:21:25
Creative Commons license:CC0
Reference information

Primary reference:
38434. R. Hori. 1988. Some characteristic radiolarians from Lower Jurassic bedded cherts of the Inuyama area, Southwest Japan. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 151:543-563 [J. Pálfy/A. Kocsis]

Secondary references:

40282 S. Gorican, E. S. Carter, P. Dumitrica, P. A. Whalen, R. S. Hori, P. De Wever, L. O'Dogherty, A. Matsuoka, and J. Guex. 2006. Catalogue and systematics of Pliensbachian, Toarcian and Aalenian radiolarian genera and species 446 [J. Pálfy/A. Kocsis]