01 / Hobetsu Arakiryu fossil
To keep the plesiosaur in the town,a town museum was founded.

Nicknamed Hoppy, the Hobetsu Arakiryu is a plesiosaur fossil whose first parts were found in 1975 by a resident of the former Hobetsu Town named Araki. The town says it founded a museum in 1982 to keep and display the fossil locally. Kamuysaurus japonicus, announced in 2019, is also on display.
- First parts found, 1975
- Museum founded, 1982 (town)
- Hokkaido natural monument, 2017
