Tochikubo Formation | |
---|---|
Stratigraphic range: Late Jurassic | |
Type | Geological formation |
Unit of | Somanakamura Group |
Underlies | Nakanosawa Formation |
Overlies | Yamagami Formation |
Area | Japan |
Thickness | Up to 350 m |
Lithology | |
Primary | Sandstone, Shale |
Location | |
Country | Japan |
Extent | Abukuma Highlands, eastern Honshu |
The Tochikubo Formation is a Jurassic geologic formation in northern Honshu, Japan, dating to the Oxfordian stage of the Late Jurassic. Fossil ornithopod tracks have been reported from the formation.[1] As well as the Bennettitalean Kimuriella.[2]