Upper reach Rubeshibegoe River: Early/Lower Campanian, Japan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia - Testudines - Dermochelyidae
Mesodermochelys undulatus Hirayama and Chitoku 1996
Specimen no. NMV-3
see common names

Geography
Country:Japan State/province:Hokkaido County:Nakagawa
Coordinates: 44.7° North, 142.0° East (view map)
Paleocoordinates:49.3° North, 130.4° East
Basis of coordinate:estimated from map
Time
Period:Cretaceous Epoch:Late/Upper Cretaceous
Stage:Campanian 10 m.y. bin:Cretaceous 7
Key time interval:Early/Lower Campanian
Age range of interval:83.50000 - 70.60000 m.y. ago
Stratigraphy
Geological group:Upper Yezo Formation:Osoushinai Member:Upper Sandstone
Stratigraphic resolution:member
Lithology and environment
Primary lithology:concretionary lithified sandy,calcareous sandstone
Secondary lithology:tuffaceous lithified sandy sandstone
Includes fossils?Y
Lithology description: The upper sandstone member is composed mainly of fine-grained sandstone with intercalations of very coarse-grained and tuffaceous sandstone beds.
Environment:marine indet.
Taphonomy
Modes of preservation:cast,concretion
Size of fossils:macrofossils
Spatial orientation:random
Abundance in sediment:rare
Collection methods and comments
Collection excludes:some genera
Collection methods:surface (float),mechanical,field collection
Collection size:1 specimens
Reason for describing collection:taxonomic analysis
Collection method comments: Nakagawa Museum, Nakagawa-cho, Hokkaido, Japan collection
Metadata
Database number:152095
Authorizer:D. Nicholson Enterer:D. Nicholson
Modifier:M. Uhen
Created:2013-11-07 10:29:26 Last modified:2018-11-24 12:52:59
Access level:the public Released:2013-11-07 10:29:26
Creative Commons license:CC BY
Reference information

Primary reference:

48802. R. Hirayama and Y. Hikida. 1998. Mesodermochelys (Testudines; Chelonioidea; Dermochelyidae) from the Late Cretaceous of Nakagawa-cho, Hokkaido, North Japan. Bulletin of the Nakagawa Museum of Natural History 1:69-76 [D. Nicholson/D. Nicholson]