Akasaka Limestone, Parafusulina Zone: Roadian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Strophomenata - Productida - Scacchinellidae
Scacchinella sp. Gemmellaro 1891
Shen et al. 2006
see common names

Geography
Country:Japan
Coordinates: 35.4° North, 136.6° East (view map)
Paleocoordinates:8.7° North, 133.4° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Permian Epoch: Guadalupian
Stage: Roadian 10 m.y. bin: Permian 3
Key time interval: Roadian
Age range of interval: 274.4 - 266.9 m.y. ago
Stratigraphy
Formation:Akasaka
Stratigraphic resolution:group of beds
Stratigraphy comments: The age is given as Middle to Upper Permian. The Akasaka Limestone is divided into four members, the Lower, Middle, Upper and Uppermost Members (Ozawa and Nishiwaki, 1992).
Lithology and environment
Primary lithology:gray,white lithified "limestone"
Includes fossils?Y
Lithology description: grayish white limestone, rich in crinoids and calcisponges
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Metadata
Database number:62294
Authorizer:T. Olszewski, M. Clapham Enterer:L. Fall, M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2006-07-17 10:44:33 Last modified:2025-02-22 15:12:02
Access level:the public Released:2006-07-17 10:44:33
Creative Commons license:CC0
Reference information

Primary reference:
17999. Y. Okumura and S. Tomida. 2000. A fossil Scacchinella (Brachiopoda: Scacchinellidae) with conjoined valves from the Permian Akasaka Limestone, central Japan. Bulletin of the Mizunami Fossil Museum 27:195-197 [T. Olszewski/L. Fall]

Secondary references:

27411 S.Z. Shen, J.I. Tazawa, and T. Ono. 2006. Scacchinella (Productida, Brachiopoda) from the Lower Permian of Akasaka, Mino Belt, central Japan, with a review of its world distribution. Science Reports, Niigata University (Geology) 21:19-30 [M. Clapham/M. Clapham]