Nakijin: Early Pleistocene, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes - Colubridae
Cyclophiops sp. Boulenger 1888
Dinodon sp. Duméril et al. 1854
Dinodon spp.
Osteichthyes - Elapidae
Osteichthyes - Viperidae
Osteichthyes - Crotalidae
Protobothrops sp. Hoge and Romano-Hoge 1983
see common names

Geography
Country:Japan State/province:Ryukyu Islands
Coordinates: 26.7° North, 128.0° East (view map)
Paleocoordinates:
Basis of coordinate:estimated from map
Time
Period: Quaternary Epoch: Pleistocene
10 m.y. bin: Cenozoic 6
Key time interval: Early Pleistocene
Age range of interval: 2.58 - 0.774 m.y. ago
Age estimate: 1.5 ± .2 Ma (fission track)
Stratigraphy
Formation:Guga
Stratigraphy comments: dated to 1.5 +/- 0.2 million years ago using the fission track method (Otsuka 2002)
Lithology and environment
Primary lithology:gray mudstone
Includes fossils?Y
Lithology description: dark gray mudstone
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:210495
Authorizer:M. Uhen Enterer:M. Uhen
Research group:vertebrate
Created:2020-06-02 14:46:43 Last modified:2025-02-22 15:12:02
Access level:the public Released:2020-06-02 14:46:43
Creative Commons license:CC0
Reference information

Primary reference:
72602. T. Ikeda, H. Otsuka, and H. Ota. 2016. Early Pleistocene Fossil Snakes (Reptilia: Squamata) from Okinawajima Island in the Ryukyu Archipelago, Southwestern Japan. Herpetological Monographs 30:143-156 [M. Uhen/M. Uhen]