Crews from the Denver Museum of Nature & Science plan to start removing the bones Tuesday under an agreement reached with local officials.
A bulldozer operator discovered some rib bones while working on a construction project at Ziegler Reservoir last month. Since then, the museum said that at least one woolly mammoth and at least three mastodons have been found. Several other bones have also been discovered but researchers aren’t yet sure what they are.
Steve Holen, the museum’s archaeology curator, said it’s the first time the remains of the two animals that lived in different environments and had different food sources have been found in the same place in Colorado.
Mammoths mostly ate grass, while mastodons ate branches and leaves and lived where there were trees. Holen said the two animals might end up in the same places searching for water.