Chichibu: Burdigalian - Langhian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Reptilia
- Odontopterygiformes
- Pelagornithidae
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Osteodontornis sp.
Howard 1957
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Matsuoka et al. 2003 | |||||||||
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Mammalia
- Perissodactyla
- Paleoparadoxiidae
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Paleoparadoxia tabatai
(Tokunaga 1939)
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Shikama 1966 | 1 individual | ||||||||
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Mammalia
- Cetacea
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Diorocetus sp.
Kellogg 1968
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1 specimen | |||||||||
| new species | ||||||||||
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Diorocetus chichibuensis n. sp.
Yoshida et al. 2003
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Yoshida et al. 2003 | 1 individual | ||||||||
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Mammalia
- Cetacea
- Cetotheriidae
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Cetotheriidae indet.
(Brandt 1872)
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1 specimen | |||||||||
| see common names | ||||||||||
Geography
| Country: | Japan | State/province: | Saitama |
| Coordinates: | 36.0° North, 139.1° East (view map) | ||
| Paleocoordinates: | 39.5° North, 136.4° East | ||
| Basis of coordinate: | estimated from map |
Time
| Period: | Neogene | Epoch: | Miocene |
| 10 m.y. bin: | Cenozoic 5 | ||
| Key time interval: | Burdigalian - Langhian | Foram zone: | N8 |
| Age range of interval: | 20.44000 - 13.82000 m.y. ago | ||
| Age estimate: | 16.4 to 15.1 Ma (other) |
Stratigraphy
| Geological group: | Chichibumachi | Formation: | Nagura | ||
| Stratigraphic resolution: | formation | ||||
| Stratigraphy comments: late Burdigalian-Langhian (16.4–15.1 Ma). The Nagura Formation forms the lowermost part of the Chichibumachi Group, which correlates with foraminiferal zone N8 [51, 110, 111] and thus spans the Burdigalian- Langhian boundary (16.4–15.1 Ma) [20, 54]. (Marx & Fordyce, 2015) | |||||
Lithology and environment
| Primary lithology: | not reported |
| Environment: | reef, buildup or bioherm |
| Geology comments: tropical, shallow, reef | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | general faunal/floral analysis |
Metadata
| Database number: | 56956 | ||
| Authorizer: | M. Uhen | Enterer: | M. Uhen |
| Modifier: | B. Shipps | Research group: | vertebrate |
| Created: | 2005-11-29 12:14:11 | Last modified: | 2017-02-26 15:50:28 |
| Access level: | the public | Released: | 2005-11-29 12:14:11 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 15356. | T. Kimura and Y. Hasegawa. 2004. An outline of the Miocene cetotheres of Japan. Bulletin of the Gunma Museum of Natural History 8:79-88 [M. Uhen/M. Uhen] |
Secondary references:
| 55050 | F. G. Marx and R. E. Fordyce. 2015. Baleen boom and bust: a synthesis of mysticete phylogeny, diversity and disparity. Royal Society Open Science 2:140434 [M. Uhen/M. Uhen] | |
| 40386 | H. Matsuoka, Y. Koda, K. Ono and Y. Hasegawa. 2003. Pseudodontorn fossils from Japan, with preliminary observations on the maxilla specimen from the Lower Oligocene Iwaki Formation, Fukushima, Japan. Bulletin of the Gunma Museum of Natural History 7:47-59 [M. Uhen/M. Uhen] | |
| 30804 | T. Shikama. 1966. Postcranial skeletons of Japanese Desmostylia. Palaeontological Society of Japan Special Papers 12:1-202 [M. Uhen/M. Uhen] | |
| 29587 | K. Yoshida, T. Kimura, and Y. Hasegawa. 2003. New cetothere (Cetacea: Mysticeti) from the Miocene Chichibumachi Group, Japan. Bulletin of the Saitama Museum of Natural History 20-21:1-10 [M. Uhen/M. Uhen] |