Kamigahara, Survey Point 2: Barremian, Japan
collected by H. Uemura

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Hexanchiformes
Bivalvia - Arcida - Parallelodontidae
Cephalopoda - Ammonitida - Heteroceratidae
Heteroceras sp. d'Orbigny 1849
see common names

Geography
Country:Japan State/province:Gunma
Coordinates: 36.1° North, 138.8° East (view map)
Paleocoordinates:46.2° North, 146.4° East (Wright 2013)
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period: Cretaceous Epoch: Early Cretaceous
Stage: Barremian 10 m.y. bin: Cretaceous 2
Key time interval: Barremian
Age range of interval: 125.77 - 121.4 m.y. ago
Stratigraphy
Formation:Ishido Member:Lower
Stratigraphic resolution:bed
Stratigraphy comments: upper part of formation
Lithology and environment
Primary lithology:gray argillaceous sandstone
Includes fossils?Y
Lithology description: "dark gray blocky pelitic sandstone"
Environment:marginal marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collectors:H. Uemura
Collection method comments: collected by joint project of Gunma Pref. Museum of Natural History and Kan-na Town Dinosaur Center
Metadata
Also known as:Kan-na, Kanna
Database number:229066
Authorizer:M. Carrano Enterer:M. Carrano
Research group:vertebrate
Created:2023-02-06 13:39:54 Last modified:2025-02-22 15:12:02
Access level:the public Released:2023-02-06 13:39:54
Creative Commons license:CC0
Reference information

Primary reference:
82300. Y. Takakuwa, K. Sato, and T. Kimura. 2008. [III. Paleontological study of the Yamanaka Group]. In H. Kanai, T. Mita, & Y. Takakuwa (eds.), Gunma Museum of Natural History, Natural History Research Report 4:79-98 [M. Carrano/M. Carrano/M. Carrano]