Nio River (Mesodermochelys locality): Early/Lower Campanian, Japan
collected by Fujiyuki Endo 2001
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Testudines
- Dermochelyidae
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Mesodermochelys sp.
Hirayama and Chitoku 1996
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| NMV 50, partial carapace | ||||||||||
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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| associated with the turtle | ||||||||||
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Gastropoda
- Colloniidae
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Hikidea cf. yasukawensis
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| associated with the turtle | ||||||||||
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Gastropoda
- Naticidae
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? Gyrodes sp.
Conrad 1860
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| associated with the turtle | ||||||||||
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Gastropoda
- Provannidae
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Provanna cf. nakagawensis
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| associated with the turtle | ||||||||||
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Bivalvia
- Lucinida
- Thyasiridae
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Thyasira tanabei
Kiel et al. 2008
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| associated with the turtle | ||||||||||
| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Nakagawa |
| Coordinates: | 44.7° North, 141.8° East (view map) | ||
| Paleocoordinates: | 49.3° North, 130.2° East | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | hand sample |
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: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Geological group: | Yezo | Formation: | Osoushinai |
| Stratigraphic resolution: | bed |
Lithology and environment
| Primary lithology: | gray mudstone |
| Secondary lithology: | sandstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: The Osoushinai Formation is composed of grey to dark grey siltstone with intercalations of sandstone | |
| Environment: | marine indet. |
| Geology comments: The Osoushinai Formation is [...] most likely formed in the outer shelf to the upper continental slope setting | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | Fujiyuki Endo | Collection dates: | 2001 |
| Collection method comments: NMV, Nakagawa Museum of Natural History Vertebrate collections, Nakagawa Town, Hokkaido, Japan | |||
Metadata
| Database number: | 188484 | ||
| Authorizer: | E. Vlachos | Enterer: | E. Vlachos |
| Modifier: | P. Mannion | ||
| Created: | 2017-09-05 01:41:05 | Last modified: | 2022-08-19 10:56:28 |
| Access level: | the public | Released: | 2017-09-05 01:41:05 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 63216. | R. G. Jenkins, A. Kaim, K. Sato, K. Moriya, Y. Hikida and R. Hirayama. 2017. Discovery of chemosynthesis-based association on the Cretaceous basal leatherback sea turtle from Japan. Acta Palaeontologica Polonica 62 [E. Vlachos/E. Vlachos] |