KF39, Chaya-sawa, Yassegawa River: Wordian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Productida - Aulostegidae
Tazawa 2016
Strophomenata - Productida - Echinoconchidae
Waagenoconcha irginae (Stuckenberg 1898)
Tazawa 2016
Strophomenata - Productida - Rugosochonetidae
(1 measurement)
see common names

Geography
Country:Japan
Coordinates: 39.0° North, 141.5° East (view map)
Paleocoordinates:7.0° North, 137.5° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Permian Epoch: Guadalupian
Stage: Wordian 10 m.y. bin: Permian 3
Key time interval: Wordian
Age range of interval: 266.9 - 264.28 m.y. ago
Stratigraphy
Formation:Kamiyasse
Stratigraphic resolution:bed
Stratigraphy comments: Lower part of the Kamiyasse Formation
Lithology and environment
Primary lithology:fine,gray,green lithified sandstone
Environment:marine indet.
Taphonomy
Modes of preservation:mold/impression
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Repository: Niigata University, Faculty of Science, Department of Geology
Metadata
Database number:165924
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2015-01-31 10:17:24 Last modified:2025-02-22 15:12:02
Access level:the public Released:2015-01-31 10:17:24
Creative Commons license:CC0
Reference information

Primary reference:
54230. G. A. Afanasjeva, J. I. Tazawa, and T. Shintani. 2015. Brachiopods of the order Chonetida from the Lower and Middle Permian of the South Kitakami Mountains, northeast Japan. Paleontological Journal 49:19-25 [M. Clapham/M. Clapham]

Secondary references:

59391 J. I. Tazawa. 2016. Middle Permian (Wordian) mixed Boreal‒Tethyan brachiopod fauna from Kamiyasse‒Imo, South Kitakami Belt, Japan. Science Reports, Niigata University (Geology) 31:7-43 [M. Clapham/M. Clapham]
62779 J. I. Tazawa. 2017. Spinomarginifera and Waagenoconcha (Productida, Brachiopoda) from the middle Permian (Wordian-Capitanian) of the South Kitakami Belt, Japan. Science Reports, Niigata University (Geology) 32:33-56 [M. Clapham/M. Clapham]