Niranohama, locality 15, Utatsu-cho, Motoyoshi-gun, Miyagi Prefecture: Anisian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Ceratitida - Sturiidae
(1 measurement)
see common names

Geography
Country:Japan
Coordinates: 38.7° North, 141.5° East (view map)
Paleocoordinates:6.5° North, 140.2° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Triassic Epoch: Middle Triassic
Stage: Anisian 10 m.y. bin: Triassic 2
Key time interval: Anisian
Age range of interval: 247 - 241.464 m.y. ago
Stratigraphy
Formation:Isatomae
Stratigraphic resolution:bed
Stratigraphy comments: Upper part of formation
Lithology and environment
Primary lithology: lithified "siliciclastic"
Lithology description: Lithology not reported in paper, but other publications describe Isatomae Formation as a thin alternation of shale and calcareous sandstone, sometimes intercalated with massively bedded shale and thick bedded sandstone
Environment:marine indet.
Taphonomy
Modes of preservation:cast
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:97222
Authorizer:M. Clapham Enterer:M. Clapham
Modifier:M. Clapham Research group:marine invertebrate
Created:2010-07-20 11:48:12 Last modified:2025-02-22 15:12:02
Access level:the public Released:2010-07-20 11:48:12
Creative Commons license:CC0
Reference information

Primary reference:
33162. T. Ishibashi. 1978. A Middle Triassic ammonite from the Isatomae Formation, Kitakami, Japan. Memoirs of the Faculty of Science, Kyushu University, Series D, Geology 24(1):25-31 [M. Clapham/M. Clapham]