The tooth of a woolly mammoth was found at a construction site in Iowa.

A woolly mammoth tooth was found by construction workers

A woolly mammoth tooth was found by construction workers

Construction workers from DGR Engineering uncovered a tooth belonging to the extinct animal that is believed to be a whopping 20,000 years old.

Justin Blauwet, a worker - and fossil fan - was the one who suspected it was something from the Ice Age creature, and the “lucky find” was confirmed by scientists at the University of Iowa.

Tiffany Adrian, a paleontologist at the university said: "While discovery of mammoth remains is not uncommon in Iowa, once the bones and teeth are out in the open, they can fall apart and disappear quickly because they are not completely fossilized."