| Tochikubo Formation | |
| Type: | Geological formation |
| Prilithology: | Sandstone, Shale |
| Country: | Japan |
| Unitof: | Somanakamura Group |
| Underlies: | Nakanosawa Formation |
| Overlies: | Yamagami Formation |
| Thickness: | Up to 350 m |
| Extent: | Abukuma Highlands, eastern Honshu |
| Area: | Japan |
| Period: | Oxfordian |
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]