Iwaki Koyo High School: Burdigalian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes - Cetacea
1 specimen
see common names

Geography
Country:Japan State/province:Fukushima County:Iwaki
Coordinates: 37.0° North, 140.9° East (view map)
Paleocoordinates:37.1° North, 138.1° East (Wright 2013)
Basis of coordinate:stated in text
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:Minamishirado Member:lower
Stratigraphy comments: Minamishirado Formation, Shirado Group, latest early Miocene, Burdigalian. The Mina- mishirado Formation is divided into two parts (lower and upper part). Fission track dating of the tuff layer in the lower part of the Minamishirado Formation yielded geological age of 15.9 ± 0.7 Ma (1σ) (Kubo et al., 2002). According to the diatom biostratigraphy, Minamishirado Formation is correlated to the upper part of the Crucidenticula kanayae Zone (NPD 3A: 16.5–16.3 Ma) (Koizumi, 1985, 1986; Yanagisawa and Akiba, 1998; Kubo et al., 2002; Sudo et al., 2005).
Lithology and environment
Primary lithology: mudstone
Secondary lithology: sandstone
Includes fossils?Y
Lithology description: mudstone and sandstone,
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:227423
Authorizer:M. Uhen Enterer:M. Uhen
Research group:vertebrate
Created:2022-10-11 08:23:08 Last modified:2025-02-22 15:12:02
Access level:the public Released:2022-10-11 08:23:08
Creative Commons license:CC0
Reference information

Primary reference:
82841. T. Kimura, Y. Hasegawa, and T. Suzuki. 2022. A new species of baleen whale (Isanacetus-Group) from the Early Miocene, Japan. Paleontological Research 27(1):85-101 [M. Uhen/M. Uhen/M. Uhen]