page_title: Kuwajima Formation
section_title: Choristoderes
hierarchical_section_title: Kuwajima Formation / Vertebrate Paleobiota / Choristoderes
caption_attribution_description: Life reconstruction of the Japanese Monjurosuchus.
context_page_description: The Kuwajima Formation is an Early Cretaceous geologic formation in Japan. Its precise age is uncertain due to a lack of identifying fossils, but it is probably Valanginian to Hauterivian in age. Dinosaur remains are among the fossils that have been recovered from the formation, including Albalophosaurus yamaguchiorum.
  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.
caption: Monjurosuchus
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