Annakka: Tortonian, Japan
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Dugongidae indet.
Gray 1821
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Kobayashi 2002 | 1 specimen | ||||||||
Shimoakima specimen | ||||||||||
= Halitheriinae indet.
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Furusawa 2005 | |||||||||
Reptilia
- Anseriformes
- Anatidae
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aff. Megalodytes sp.
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Matsuoka et al. 2001 | 1 specimen | ||||||||
Mammalia
- Carnivora
- Desmatophocidae
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cf. Allodesmus megallos
Barnes and Hirota 1995
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Hasegawa et al. 2000 | 1 specimen | ||||||||
synonym of Allodesmus sinanoensis | ||||||||||
Mammalia
- Cetacea
- Delphinidae
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Delphinidae indet.
Gray 1821
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Oishi and Hasegawa 1995 | 1 specimen | ||||||||
Mammalia
- Cetacea
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cf. Scaldicetus sp.
Du Bus 1867
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Kimura et al. 2006 | |||||||||
Mammalia
- Cetacea
- Cetotheriidae
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Cetotheriidae indet.
(Brandt 1872)
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1 specimen | |||||||||
Mammalia
- Cetacea
- Balaenopteridae
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Balaenoptera sp.
Lacépède 1804
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Hasegawa et al. 2002 | 1 specimen | ||||||||
more likely Balaenopteridae indet. (M. D. Uhen) | ||||||||||
see common names |
Geography
Country: | Japan | State/province: | Gunma |
Coordinates: | 36.3° North, 138.9° East (view map) | ||
Paleocoordinates: | 37.9° North, 137.1° East | ||
Basis of coordinate: | estimated from map |
Time
Period: | Neogene | Epoch: | Miocene |
Stage: | Tortonian | 10 m.y. bin: | Cenozoic 6 |
Key time interval: | Tortonian | ||
Age range of interval: | 11.63000 - 7.24600 m.y. ago | ||
Age estimate: | 11.29 ± .12 Ma (Ar/Ar) |
Stratigraphy
Lithology and environment
Primary lithology: | not reported |
Environment: | marine indet. |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Reason for describing collection: | general faunal/floral analysis |
Metadata
Also known as: | Annaka | ||
Database number: | 56950 | ||
Authorizer: | M. Uhen | Enterer: | M. Uhen |
Modifier: | M. Uhen | Research group: | vertebrate |
Created: | 2005-11-29 11:38:53 | Last modified: | 2019-11-20 12:11:31 |
Access level: | the public | Released: | 2005-11-29 11:38:53 |
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:
70357 | H. Furusawa. 2005. Evolution of the North Pacific Sirenia (Hydrodamalinae) and their paleoenvironment. Fossils 77:29-33 [M. Uhen/M. Uhen] | |
25587 | Y. Hasegawa, Y. Takakuwa, H. Nakajima and H. Matsuoka. 2000. Miocene Otariid (Allodesminae) scapula from Haraichi Formation, Tomioka Group, Gunma, Japan. Bulletin of the Gunma Museum of Natural History 4:47-56 [M. Uhen/M. Uhen] | |
19064 | Y. Hasegawa, Y. Takakuwa, and H. Nakajima. 2001. First discovery of Physeterid fossil from the Haraichi Formation (Middle Miocene), Tomioka Group, Gunma, Japan. Bulletin of the Gunmna Museum of Natural History 5:31-38 [M. Uhen/M. Uhen] | |
25584 | Y. Hasegawa, Y. Takakuwa, and H. Nakajima. 2002. A balaenopterid whale from the Haraichi Formation (Middle Miocene), Toioka Group, Annaka City, Gunma Prefecture, Japan. Bulletin of the Gunma Museum of Natural History 6:39-44 [M. Uhen/M. Uhen/M. Uhen] | |
19039 | T. Kimura, Y. Hasegawa, and L. G. Barnes. 2006. Fossil sperm whales (Cetacea, Physeteridae) from Gunma and Ibaraki prefectures, Japan; with observations on the Miocene fossil sperm whale Scaldicetus shigensis Hirota and Barnes, 1995. Bulletin of the Gunma Museum of Natural History 10:1-23 [M. Uhen/M. Uhen] | |
27097 | S. Kobayashi. 2002. Halitheriine sirenia from the Itahana Formation (late Middel Miocene - early late Miocene) in Annaka, Gunma Prefecture, central Japan. Chikyu Kagaku 56:179-190 [M. Uhen/M. Uhen] | |
25588 | H. Matsuoka, H. Nakajima, Y. Takakuwa and Y. Hasegawa. 2001. Preliminary note on the Miocene flightless swan from the Haraichi Formation, Tomioka Group of Annaka, Gunma, Japan. Bulletin of the Gunma Museum of Natural History 5:1-8 [M. Uhen/M. Uhen] | |
12148 | M. Oishi and Y. Hasegawa. 1995. A list of fossil cetaceans in Japan. The Island Arc 3:493-505 [M. Uhen/M. Uhen/M. Uhen] |