Where: Japan (33.4° N, 131.3° E: paleocoordinates 33.9° N, 130.8° E)
• coordinate estimated from map
• small collection-level geographic resolution
When: Tsubusagawa Formation, Piacenzian (3.6 - 2.6 Ma)
• A few meters below radiometric age of 2.8 +/- 0.3 Ma (although fault present in between)
• bed-level stratigraphic resolution
Environment/lithology: mire or swamp; lithified, sandy siltstone
Size classes: macrofossils, mesofossils
Preservation: original chitin
Primary reference: 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 165742: authorized by Matthew Clapham, entered by Matthew Clapham on 27.01.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Insecta | |
Coleoptera indet. Linnaeus 1758 beetle | |
Gyrinus sp. Geoffroy 1762 whirligig beetle | |
Ilybius sp. Erichson 1832 predaceous diving beetle | |
Carabidae indet. Latreille 1802 ground beetle
Oodini indet. Laferte-Senectere 1851 ground beetle
Elaphrus sp. Fabricius 1775 ground beetle | |
Chrysomelidae indet. Latreille 1802 leaf beetle
Donaciinae indet. Kirby 1837 leaf beetle
Donacia spp. Fabricius 1775 leaf beetle | |
Curculionidae indet. Latreille 1802 snout beetle | |
Onthophagus sp. Latreille 1802 scarab beetle | |
Coelostoma sp. Brullé 1835 water scavenger beetle |