Ashizawa Formation

Last updated
Ashizawa Formation
Stratigraphic range: Coniacian
O
S
D
C
P
T
J
K
Pg
N
Type Geological formation
Unit of Futaba Group
Sub-unitsAsamigawa Member, Obisagawa Member
Underlies Kasamatsu Formation
Overlies Early Cretaceous Granite, Permian shale and sandstone
Location
Regionnorthern Honshu
Country Japan

The Ashizawa Formation is a Coniacian geologic formation in northeastern Honshu, 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] A jawbone belonging to a therian mammal has also been discovered from this unit. [2]

Contents

Palaeofauna

See also

Footnotes

  1. Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  2. Kusuhashi, N., Suzuki, T., Terui, K., Sato, A., and Amiot, R. (2016) A Late Cretaceous mammalian dentary from the Ashizawa Formation (Futaba Group), Fukushima, northeastern Japan. Island Arc, 25: 403–409. doi: 10.1111/iar.12133.
  3. Lambert, David; the Diagram Group (1990). The Dinosaur Data Book. New York: Avon Books. pp.  63–66, 250. ISBN   978-0-380-75896-8.

References