Meshikuni Fm - Fd-3: Early Miocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Cardiida - Cardiidae
Bivalvia - Ostreida - Ostreidae
"Ostrea" sp. Linnaeus 1758
Bivalvia - Arcida - Glycymerididae
Glycymeris sp. Da Costa 1778
see common names

Geography
Country:Japan
Coordinates: 45.3° North, 141.0° East (view map)
Paleocoordinates:45.6° North, 136.9° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene
10 m.y. bin: Cenozoic 5
Key time interval: Early Miocene
Age range of interval: 23.04 - 15.98 m.y. ago
Stratigraphy
Formation:Meshikuni
Stratigraphic resolution:bed
Stratigraphy comments: STRATIGRAPHIC RELATIONS: From Meshikuni Fm, which unconformably overlies the Cretaceous Rebun Gp and is unconformably overlain by the Hamanaka Fm (?Middle Miocene). THICKNESS: From bed of less than 5 m within an appoximately ~200 m thick composite (discontinous) section. AGE: Early Miocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From middle part of Meshikuni Fm.
Lithology and environment
Primary lithology:pebbly poorly lithified sandy siltstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Siltstone with pebbly sandstone. LITHIFICATION: Poorly-lithified on the basis of figured specimens.
Environment:coastal indet.
Geology comments: ENVIRONMENT: Shallow water, siliciclastic. TEMPERATURE: Cool-water.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Fragmentation:occasional
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:taxonomic analysis
Collection method comments: COLLECTOR: Y. Noda. REPOSITORY: Institute of Geology and Paleontology, Faculty of Science, Tohoku University, Sendai, Japan.
Taxonomic list comments:COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Authoritative publication, with some species-level identifications (dependent on preservational quality).
Metadata
Database number:70350
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2007-03-21 09:46:39 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2008-03-21 09:46:39
Creative Commons license:CC0
Reference information

Primary reference:
23605. Y. A. Noda and K. Hoyanagi. 1993. Molluscan fauna from the Miocene Meshikuni Formation on Rebun Island, Northern Hokkaido. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 172:311-327 [A. Hendy/A. Hendy]