Futaba Group

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Futaba Group
Stratigraphic range: Coniacian–Santonian
TypeGeological group
Sub-unitsAshizawa Formation, , Tamayama Formation
UnderliesUnconformity with Paleogene
OverliesEarly Cretaceous Granite, Permian shale and sandstone
ThicknessOver 300 metres
Lithology
PrimarySandstone, siltstone, conglomerate
Location
Regionnorthern Honshu
CountryJapan

The Futaba Group is a Late Cretaceous geologic group in Japan. Dinosaur remains are among the fossils that have been recovered from the formation, although none have yet been referred to a specific genus.[1] It consists of both fluvial and shallow marine sediments.[2] The plesiosaur Futabasaurus was found in this unit (specifically the Tamayama Formation).

See also[]

Footnotes[]

  1. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  2. ^ 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.

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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