IGPS Fs-39, southwestern part of Kamiyamada-yashiki: Burdigalian, Japan
collected by K. Nakajima 1952

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Malacostraca - Decapoda - Hexapodidae
see common names

Geography
Country:Japan
Coordinates: 37.0° North, 140.8° East (view map)
Paleocoordinates:37.1° North, 137.9° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Miocene
Stage: Burdigalian 10 m.y. bin: Cenozoic 5
Key time interval: Burdigalian
Age range of interval: 20.45 - 15.98 m.y. ago
Stratigraphy
Geological group:Shirado Formation:Nakayama
Stratigraphy comments: Diatoms (Crucidenticula kanayae zone 3A), radiolarians (Calocycletta costata zone), nannofossils (NN4 of Martini 1971 or CN3 of Okada & Budry 1980), and planktonic foraminifera (upper N7 zone) indicate a Burdigalian age (Yabe, 2008).
Lithology and environment
Primary lithology: "siliciclastic"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collectors:K. Nakajima Collection dates:1952
Collection method comments: Repository: Institute of Geology and Paleontology, Tohoku University
Metadata
Database number:169411
Authorizer:C. Schweitzer Enterer:L. Baltzly
Modifier:M. Clapham Research group:decapod,marine invertebrate
Created:2015-05-25 09:49:39 Last modified:2025-02-22 15:12:02
Access level:the public Released:2015-05-25 09:49:39
Creative Commons license:CC0
Reference information

Primary reference:
55363.decapod R. Imaizumi. 1959. A fossil crab, Hexapus nakajimai n. sp. from Joban Coal Field. Japanese Journal of Geology and Geography 30:25-30 [C. Schweitzer/L. Baltzly/M. Clapham]