Northern coast of Maehama: Wuchiapingian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Bivalvia - Protobranchia
Bivalvia - Protobranchia - Malletiidae
Cephalopoda - Ceratitida - Araxoceratidae
Urartoceras sp. Ruzhencev 1959
see common names

Geography
Country:Japan
Coordinates: 38.8° North, 141.5° East (view map)
Paleocoordinates:1.7° North, 134.3° East (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:outcrop
Time
Period: Permian Epoch: Lopingian
Stage: Wuchiapingian 10 m.y. bin: Permian 4
Key time interval: Wuchiapingian
Age range of interval: 259.857 - 254.14 m.y. ago
Stratigraphy
Formation:Toyoma
Stratigraphic resolution:bed
Stratigraphy comments: About 30 m below the top of the Toyoma Formation. This horizon (Maehama Horizon) is slightly (about 15 m?) lower than that of E. cf. bandoi, but their precise stratigraphic relationship is unknown.
Lithology and environment
Primary lithology: lithified "siliciclastic"
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collection method comments: Repository: IGPS, Institute of Geology and Paleontology, Tohoku University, Sendai
Metadata
Database number:212283
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2020-08-09 03:57:51 Last modified:2025-02-22 15:12:02
Access level:the public Released:2020-08-09 03:57:51
Creative Commons license:CC0
Reference information

Primary reference:
73324. M. Ehiro. 2019. Two additional araxoceratid ammonoids from the Wuchiapingian (upper Permian) of the South Kitakami Belt, Northeast Japan. Earth Science (Chikyu Kagaku) 73:139-148 [M. Clapham/M. Clapham/M. Clapham]