Earth:Tamayama Formation
From HandWiki
Short description: Geologic formation in Japan
| Tamayama Formation Stratigraphic range: Santonian | |
|---|---|
| Type | Geological formation |
| Unit of | Futaba Group |
| Sub-units | Kohisagawa Member, Irimaza Member |
| Underlies | Unconformity with the Eocene Iwaki Formation |
| Overlies | Kasamatsu Formation |
| Thickness | ~ 150 metres |
| Lithology | |
| Primary | Sandstone |
| Other | Siltstone |
| Location | |
| Region | northern Honshu |
| Country |  Japan |
The Tamayama Formation is a Santonian geologic formation in Japan . Dinosaur remains not referrable to the genus level are among the fossils that have been recovered from the formation.[1] The lower and middle part of the formation consists of braided river sandstone, while the upper portion consists of upper shoreface to inner shelf sandstone.[2] Fossil plants are known from the formation, along with a species of Inoceramus[3] and a sauropod dinosaur.
Palaeofauna
- Futabasaurus
- Inoceramus
- Plantae indet.
- Titanosauria indet.
See also
- List of dinosaur-bearing rock formations
- List of stratigraphic units with few dinosaur genera
Footnotes
- ↑ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ↑ Ando, Hisao; Seishi, Masao; Oshima, Mitsuharu; Matsumaru, Tetsuya (1995). "Fluvial-Shallow Marine Depositional Systems of the Futaba Group (Upper Cretaceous). Depositional facies and sequences.". Journal of Geography (Chigaku Zasshi) 104 (2): 284–303. doi:10.5026/jgeography.104.284. ISSN 0022-135X. http://joi.jlc.jst.go.jp/JST.Journalarchive/jgeography1889/104.284?from=CrossRef.
- ↑ Takahashi, Masamichi; Friis, Else Marie; Crane, Peter R. (March 2007). "Fossil Seeds of Nymphaeales from the Tamayama Formation (Futaba Group), Late Cretaceous (Early Santonian) of Northeastern Honshu, Japan" (in en). International Journal of Plant Sciences 168 (3): 341–350. doi:10.1086/510414. ISSN 1058-5893. http://www.journals.uchicago.edu/doi/10.1086/510414.
References
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN:0-520-24209-2.
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