Species: japonicus KOBAYASHI, TAKASAKI, FIORILLO, CHINZORIG & HIKIDA, 2022
Etymology: In reference to Jjapan, where the specimen was found.
Holotype: NMV-52
Locality: Nakagawa Town, Hokkaido Prefecture, Hokkaido Island, Japan.
Horizon: Osoushinai Formation, Yezo Group.
Biostratigraphy:
Age: Early Campanian Stage, Senonian Subepoch, Gulf Epoch, Late Cretaceous.
Material: Partial vertebra, adn ap partial right hand, including metacarpal I, paroximal eds of unguals I and II, and nearly complete ungual III.
Note: A marine deposit.