Prefectural road near Mikasa: Early Cenomanian, Japan
collected by Tanabe

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Diplobelida - Diplobelidae
see common names

Geography
Country:Japan
Coordinates: 43.2° North, 142.0° East (view map)
Paleocoordinates:49.6° North, 147.3° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period: Cretaceous Epoch: Late Cretaceous
Stage: Cenomanian 10 m.y. bin: Cretaceous 5
Key time interval: Early Cenomanian
Age range of interval: 100.5 - 93.9 m.y. ago
Stratigraphy
Geological group:Yezo Formation:Mikasa
Stratigraphic resolution:group of beds
Stratigraphy comments: As the specimen was collected in the western part of the exposure, it can be safely attributed to fossil horizon 1 of Kurihara et al. (2007), which is early Cenomanian in age, as indicated by the occurrence of the index ammonites Mantelliceras japonicum
Lithology and environment
Primary lithology:hummocky CS lithified sandstone
Lithology description: Marine sandstones, sometimes with hummocky cross stratification and bioturbated sandy mudstones
Environment:transition zone/lower shoreface
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:taxonomic analysis
Collectors:Tanabe
Collection method comments: Repository: FU Berlin, Institute of Geological Sciences, Paleontology Branch
Metadata
Database number:212909
Authorizer:M. Clapham Enterer:M. Clapham
Research group:marine invertebrate
Created:2020-08-22 20:01:19 Last modified:2025-02-22 15:12:02
Access level:the public Released:2020-08-22 20:01:19
Creative Commons license:CC0
Reference information

Primary reference:
73518. D. Fuchs. 2012. Protoconch morphology of Conoteuthis (Diplobelida, Coleoidea) and its implications on the presumed origin of the Sepiida. Cretaceous Research 34:200-207 [M. Clapham/M. Clapham]