Upper reach Rubeshibegoe River: Early/Lower Campanian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Reptilia
- Testudines
- Dermochelyidae
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Mesodermochelys undulatus
Hirayama and Chitoku 1996
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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] |