01 / Kushiro Mukashibaku
A mammal the town dates to about 38 million years agois called Kushiro Mukashibaku.

Under the place name Tomachise, the town's tourism portal records that a fossil of the mammal Kushiro Mukashibaku was found in 1968, and says it lived about 38 million years ago. A specimen of its upper jaw was described as a new species in a 1983 research bulletin of the National Museum of Nature and Science.
- About 38 million years ago (town)
- Found in 1968 (town)
- Described as a new species, 1983
