Akaiwa Formation
Stratigraphic range: Hauterivian-Barremian
~132–125 Ma
TypeGeological formation
Unit ofTetori Group
UnderliesKitadani Formation
OverliesKuwajima Formation
Lithology
PrimarySandstone, conglomerate
Location
Coordinates36°12′N 136°42′E / 36.2°N 136.7°E / 36.2; 136.7
Approximate paleocoordinates46°06′N 138°18′E / 46.1°N 138.3°E / 46.1; 138.3
RegionHonshu
Country Japan
Akaiwa Formation is located in Japan
Akaiwa Formation
Akaiwa Formation (Japan)

The Akaiwa Formation (Japanese: 赤岩層, romanized: Akaiwa-sō) is an Early Cretaceous (Hauterivian-Barremian) geologic formation in central Honshu, Japan.[1] Indeterminate ornithischian fossils are known from the formation. Fossil ornithopod tracks have been reported from the formation.[2] As well as the turtle Kappachelys[3]

Fossil content

The following fossils have been reported from the formation:[1]

Reptiles
Ichnofossils

See also

References

  1. ^ a b Akaiwa Formation in the Paleobiology Database
  2. ^ Weishampel et al., 2004, pp.517-607
  3. ^ a b Hirayama et al., 2013
  4. ^ Matsukawa & Obata, 1994
  5. ^ Matsumoto et al., 2014
  6. ^ Azuma & Tomida, 1995

Bibliography

Categories