Koichi, Kakegawa City: Gelasian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Lamniformes - Otodontidae
Parotodus benedeni (Le Hon 1871)
see common names

Geography
Country:Japan
Coordinates: 34.8° North, 138.0° East (view map)
Paleocoordinates:34.7° North, 137.6° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Quaternary Epoch: Pleistocene
Stage: Gelasian 10 m.y. bin: Cenozoic 6
Key time interval: Gelasian
Age range of interval: 2.58 - 1.8 m.y. ago
Stratigraphy
Geological group:Kakegawa Formation:Dainichi Member:Tenno Silt Sand
Stratigraphic resolution:group of beds
Stratigraphy comments: The Dainichi Formation is in the uppermost part of the CN12 nannofossil zone (N21 planktonic foram Blow zone), according to Tomida et al. (2006). Formerly assigned to the Late Pliocene, but should be assigned to the Gelasian (circa 2.0 Ma) after revision of the Plio-Pleistocene boundary.
Lithology and environment
Primary lithology: silty sandstone
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Repository: Natural History Museum, Tokai University (NHMT)
Metadata
Database number:277716
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:vertebrate
Created:2026-02-07 17:11:22 Last modified:2026-02-07 17:12:26
Access level:the public Released:0000-00-00 00:00:00
Creative Commons license:
Reference information

Primary reference:
94152. K. Yokoyama, M. Shiba, K. Fujita and Y. Kinoshita. 2003. Discovery of the teeth remains Parotodus benedeni (Elasmobranch) from the Dainichi Formation of the Kakegawa Group. Science Reports of The Museum, Tokai University 5:31-35 [M. Clapham/M. Clapham]