Chinomi River CU-CM, Urakawa, sample CM23: Santonian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Protozoa
- Nassellaria
- Carpocaniidae
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Stichomitra manifesta
Foreman 1978
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| recombined as Novodiacanthocapsa manifesta | ||||||||||
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Protozoa
- Nassellaria
- Artostrobiidae
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Theocampe altamontensis
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Theocampe apicata
Foreman 1971
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Theocampe yaoi
Taketani 1982
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Protozoa
- Nassellaria
- Xitidae
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Stichomitra asymbatos
Foreman 1968
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| recombined as Xitus asymbatos | ||||||||||
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Protozoa
- Nassellaria
- Eucyrtidiidae
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Stichomitra informal sp. B
Cayeux 1897
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? Eucyrtidium matsumotoi
Taketani 1982
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Solenotryma japonica
Taketani 1982
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Solenotryma cf. dacryodes
Foreman 1968
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Protozoa
- Nassellaria
- Acropyramididae
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Cornutella californica
Campbell and Clark 1944
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| var. B | ||||||||||
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Protozoa
- Nassellaria
- Amphipyndacidae
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Amphipyndax informal sp. A
Foreman 1966
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Amphipyndax stocki
(Campbell and Clark 1944)
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Protozoa
- Nassellaria
- Archaeodictyomitridae
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Dictyomitra formosa
Squinabol 1904
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Mita regina
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Protozoa
- Nassellaria
- Neosciadiocapsidae
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Squinabolella putahensis
Pessagno 1969
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Protozoa
- Spumellaria
- Spongodiscidae
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Spongotripus morenoensis
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Protozoa
- Spumellaria
- Praeconocaryommidae
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Praeconocaryomma universa
Pessagno 1976
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Protozoa
- Spumellaria
- Pyramispongiidae
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Pyramispongia glascockensis
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Protozoa
- Spumellaria
- Pseudoaulophacidae
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Pseudoaulophacus lenticulatus
(White 1928)
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Pseudoaulophacus cf. floresensis
Pessagno 1963
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Protozoa
- Spumellaria
- Orbiculiformidae
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Orbiculiforma monticelloensis
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Orbiculiforma quadrata
Pessagno 1973
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Protozoa
- Spumellaria
- Hagiastridae
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Crucella espartoensis
Pessagno 1971
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Protozoa
- Spumellaria
- Archaeospongoprunidae
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Archaeospongoprunum bipartitum
Pessagno 1973
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Protozoa
- Spumellaria
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Lithatractus pusillus
(Campbell and Clark 1944)
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| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Hokkaido |
| Coordinates: | 42.2° North, 142.8° East (view map) | ||
| Paleocoordinates: | 48.7° North, 134.0° East | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | hand sample |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Santonian | 10 m.y. bin: | Cretaceous 6 |
| Key time interval: | Santonian | ||
| Age range of interval: | 86.30000 - 83.60000 m.y. ago |
Stratigraphy
| Geological group: | Upper Yezo | Formation: | Urakawa | Member: | U1 |
| Local section: | Chinomi River | Local bed: | 16 | ||
| Local order: | bottom to top | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: sample CM23, Orbiculiforma quadrata zone | |||||
Lithology and environment
| Primary lithology: | lithified claystone |
| Lithology description: claystone with thin layers of sandstone | |
| Environment: | basinal (siliciclastic) |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | microfossils |
| Preservation of anatomical detail: | good |
Collection methods and comments
| Collection methods: | field collection |
| Reason for describing collection: | taxonomic analysis |
Metadata
| Database number: | 96038 | ||
| Authorizer: | W. Kiessling | Enterer: | U. Merkel | Research group: | micropaleontology |
| Created: | 2010-05-07 06:32:25 | Last modified: | 2010-05-07 09:32:25 |
| Access level: | the public | Released: | 2010-05-07 06:32:25 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 32589. | Y. Taketani. 1982. Cretaceous radiolarian biostratigraphy of the Urakawa and Obira areas, Hokkaido. The Science Reports of the Tohoku University, Serie 2: Geology 52:1-76 [W. Kiessling/U. Merkel] |