SATO & TANABE, 1998, SATO & STORRS, 2000

Locality: A riverside cliff of Obirashibe River, 142’01”E, 44’06”E, Obira Area, Hokkaido Island, Japan.

Horizon: Middle Yezo Group.

Biostratigraphy: Biostrina nipponica Zone.

Age: Cenomanian Stage, Upper Middle Gallic Subepoch, Lowermost Gulf Epoch, Middle Cretaceous.

Material:

UMUT MV 19965: Right half of the pectoral girdle, nearly complete right forelimb, several disarticulated vertebrae, gastralia and a portion of the right pubis.

Note: Large amount of isolated ammonoid jaws in the stomach area; possibly used as gastroliths?

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