Tate, near Isatomae (Arnautoceltites zone): Spathian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ceratitida - Paragoceratidae
    = Arnautoceltites gracilis Kiparisova 1947
Shigeta et al. 2024
    = Isculitoides sp. Spath 1930
Shigeta et al. 2024
see common names

Geography
Country:Japan
Coordinates: 38.7° North, 141.5° East (view map)
Paleocoordinates:4.8° North, 138.8° East (Wright 2013)
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period: Triassic Epoch: Early Triassic
Stage: Olenekian 10 m.y. bin: Triassic 1
Key time interval: Spathian
Age range of interval: 248.6 - 247 m.y. ago
Stratigraphy
Formation:Osawa
Stratigraphic resolution:group of beds
Stratigraphy comments: Arnautoceltites zone
Lithology and environment
Primary lithology: lithified "siliciclastic"
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: Department of Geology, Kaguwa University
Metadata
Database number:186960
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2017-07-08 11:32:12 Last modified:2025-02-22 15:12:02
Access level:the public Released:2017-07-08 11:32:12
Creative Commons license:CC0
Reference information

Primary reference:
33127. Y. Bando and S. Shimoyama. 1974. Late Scythian ammonoids from the Kitakami Massif. Transactions and Proceedings of the Paleontological Society of Japan, N.S. 94:293-312 [M. Clapham/M. Clapham]

Secondary references:

89801 Y. Shigeta, Y. Endo, and H. Inose. 2024. Spathian (Late Olenekian, Early Triassic) ammonoids from the Osawa Formation, South Kitakami Belt, northeast Japan. Paleontological Research 28(s1):1-55 [M. Clapham/M. Clapham]