Section 9, bed 11 [Hinoshima Fm]: Late Santonian, Japan
collected by Komatsu et al.

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ammonitida - Collignoniceratidae
Texanites sp. Spath 1932
Cephalopoda - Ammonitida - Tetragonitidae
see common names

Geography
Country:Japan
Coordinates: 32.5° North, 130.5° East (view map)
Paleocoordinates:38.3° North, 129.5° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Santonian 10 m.y. bin: Cretaceous 6
Key time interval: Late Santonian
Age range of interval: 85.7 - 83.6 m.y. ago
Stratigraphy
Formation:Hinoshima
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From the Hinoshima Fm, which locally unconformably overlies granitic rocks, and is overlain by the Amura Fm (Campanian) AGE: Late Santonian-Campanian. Here assigned to Late Santonian on the basis of stratigraphic position. STRATIGRAPHIC POSITION: From bed 11, near middle of section.
Lithology and environment
Primary lithology:shelly/skeletal poorly lithified mudstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Shelly mudstone. LITHIFICATION: Poorly-lithified on the basis of figured specimens.
Environment:deltaic indet.
Geology comments: ENVIRONMENT: Bottomsets-bay, within a bayhead delta-bay.
Taphonomy
Modes of preservation:body
Degree of concentration:concentrated
Size of fossils:macrofossils
Associated major elements:none
Disassociated major elements:many
Collection methods and comments
Collection methods:bulk,surface (in situ),field collection
Reason for describing collection:paleoecologic analysis
Collectors:Komatsu et al.
Collection method comments: COLLECTORS: Komatsu et al. REPOSITORY: KMSP, Faculty of Science, Kumamoto University, Japan.
Taxonomic list comments:COVERAGE: Exhaustive for bivalvia and ammonoidea. NOMENCLATURE: Not an authoritative publication, but with modern nomenclature and species-resolution identfications.
Metadata
Database number:82350
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2008-07-26 11:14:08 Last modified:2025-02-22 15:12:02
Access level:the public Released:2008-07-26 11:14:08
Creative Commons license:CC0
Reference information

Primary reference:
27747. T. Komatsu, M. Ono, H. Naruse and T. Kumagae. 2008. Upper Cretaceous depositional environments and bivalve assemblages of far-east Asia: the Himenoura Group, Kyushu, Japan. Cretaceous Research 29:489-508 [A. Hendy/A. Hendy]