The Kuwajima Formation is an Early Cretaceous geologic formation in Japan. Its precise age is uncertain due to a lack of identifying fossils, and it was previously considered likely Valanginian to Hauterivian in age. However, it is now considered to probably be Barremian in age. Dinosaurs and other vertebrates has been recovered from the Kaseki-kabe "Fossil-bluff" locality in the uppermost part of the formation.
The multituberculate mammals Hakusanobaatar matsuoi and Tedoribaatar reini are known from the Kuwajima Formation. A member of Tritylodontidae, Montirictus kuwajimaensis, has also been recovered from the unit.
Vertebrate Paleobiota
After Matsuoka et al. (2002)
Fish
Amphibians
Choristoderes
Squamates
Dinosaurs
Other reptiles
Mammaliamorphs
Invertebrate Paleobiota
See also
- List of dinosaur-bearing rock formations
References
