Locality 4, Ajimu Basin, Oita Prefecture: Pliocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Insecta - Coleoptera
130 specimens
Insecta - Coleoptera - Dytiscidae
5 specimens
Ilybius sp. Erichson 1832
36 specimens
Insecta - Coleoptera - Carabidae
85 specimens
Oodini indet. Laferte-Senectere 1851
10 specimens
Insecta - Coleoptera - Hydrophilidae
1 specimen
4 specimens
Insecta - Coleoptera - Chrysomelidae
34 specimens
6 specimens
1 specimen
Plateumaris sp. Thomson 1859
1 specimen
Insecta - Coleoptera - Curculionidae
7 specimens
see common names

Geography
Country:Japan
Coordinates: 33.4° North, 131.3° East (view map)
Paleocoordinates:33.2° North, 130.6° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Neogene Epoch: Pliocene
10 m.y. bin: Cenozoic 6
Key time interval: Pliocene
Age range of interval: 5.333 - 2.58 m.y. ago
Stratigraphy
Formation:Tsubusagawa
Stratigraphic resolution:bed
Lithology and environment
Primary lithology: lithified peat
Environment:mire/swamp Tectonic setting:intramontane basin
Geology comments: "marshy area"
Taphonomy
Modes of preservation:body,original chitin
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:165743
Authorizer:M. Clapham Enterer:M. Clapham
Research group:paleoentomology
Created:2015-01-27 16:11:36 Last modified:2025-02-22 15:12:02
Access level:the public Released:2015-01-27 16:11:36
Creative Commons license:CC0
Reference information

Primary reference:
54178. M. Hayashi, K. Yahiro, and E. Kitabayashi. 2003. Fossil insects and their paleoenvironments of the Pliocene Tsubusagawa Formation in Ajimu Basin, Oita Prefecture, Kyushu, Japan. Bulletin of the Mizunami Fossil Museum 30:167-173 [M. Clapham/M. Clapham]