Locality 7 - Komenoyama Fm, Miike: Middle Eocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Pachychilidae
Gastropoda - Turritellidae
Nagao 1928
Gastropoda - Naticidae
Gastropoda - Thersiteidae
Gastropoda - Neritidae
Bivalvia - Arcida - Arcidae
Barbatia sp. Gray 1842
Bivalvia - Cardiida - Cardiidae
Nagao 1928
see common names

Geography
Country:Japan
Coordinates: 33.1° North, 130.5° East (view map)
Paleocoordinates:39.0° North, 126.6° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period: Paleogene Epoch: Eocene
10 m.y. bin: Cenozoic 2-3
Key time interval: Middle Eocene
Age range of interval: 48.07 - 37.71 m.y. ago
Stratigraphy
Formation:Miike
Stratigraphic resolution:group of beds
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Komenoyama Fm, which conformably overlies the Ginsui Fm (Middle Eocene), and is conformably overlain by the Toka Fm (Middle Eocene). THICKNESS: From bed within formation of group that attains a thickness of ~50 m. AGE: Middle Eocene, based on molluscan biostratigraphy. STRATIGRAPHIC POSITION: From unknown part of formation.
Lithology and environment
Primary lithology: lithified sandstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Presumed lithified on the basis of age.
Environment:coastal indet.
Geology comments: ENVIRONMENT: Shallow marine, siliciclastic environment.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (float),field collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: COLLECTOR: A. Mizuno (c. 1964). REPOSITORY: Not stated in text, unknown.
Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Farly modern nomenclature, and species-level assignments.
Metadata
Database number:71019
Authorizer:A. Hendy, M. Uhen Enterer:A. Hendy, M. Uhen
Modifier:A. Hendy Research group:marine invertebrate
Created:2007-04-14 19:08:09 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2008-04-14 19:08:09
Creative Commons license:CC0
Reference information

Primary reference:
23772. A. Mizuno. 1964. Paleogene and Early Neogene molluscan faunae in West Japan. Geological Survey of Japan Report 204 [A. Hendy/A. Hendy]

Secondary references:

61622 T. Nagao. 1928. Palaeogene fossils of the Island of Kyushu, Japan Part I. Science Reports of the Tohoku Imperial University 9(3):97-128 [M. Uhen/B. Shipps/M. Uhen]