Ryugase Group

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Ryugase Group
Stratigraphic range: Late Cretaceous
Type Geological formation
Region Asia

The Ryugase Group is a geological formation on Sakhalin Island in far eastern Russia whose strata date back to the Late Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.[1]

Vertebrate paleofauna[edit]

  • Nipponosaurus sachalinensis - "Partial skull and associated postcrania, juvenile."[2]

See also[edit]


  1. ^ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, Asia)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 593-600. ISBN 0-520-24209-2.
  2. ^ "Table 20.1," in Weishampel, et al. (2004). Page 442.