A tiny 'ice mouse' with teeth the size of sand grains survived some of the coldest temperatures when dinosaurs roamed the Earth

Tech Insider
A painting of Ugrunaaluk kuukpikensis, a duck-billed dinosaur, with an insert of the tiny Sikuomys mikros, a shrew-like animal, that illustrates a scene from ancient Alaska during the Cretaceous Period.
Sikuomys mikros would have had to dodge much-larger dinosaurs when it foraged for food.

James Havens

Subscribe to fossil-teeth