Description
These plesiosaur fossils were found in a stream in the town in 1990. The specimens were found to date from the Campanian age of the Late Cretaceous period (from around 84 million to 72 million years ago) based on research on the age of small fossils of radiolarians contained in a geological formation near where the plesiosaur fossils were discovered. However, it remains unknown to which plesiosaur group the fossilized plesiosaur belonged.
Data source
Hokkaido Digital Museum
"Hokkaido Digital Museum," is a cross-search portal that aggregates information on facilities, materials, and artworks at museums and art galleries in Hokkaido
Contents holder/Provider
Aggregator
hokkaido
Hokkaido governement opened to the public the "Hokkaido Digital Museum," a cross-search portal site that collects information on museums, materials, and artworks from various museums and art galleries in Hokkaido and make it available as one-stop
Last updated
July 14, 2026