Road crews in Oakland County believe they may have made a surprising discovery.
A spokesman for the Road Commission says the crews unearthed what they think are the remains of a mastodon.
He says the crews turned up bones and what appeared to be a tusk in Rochester Hills on Friday.
Mastodons were elephant-like mammals that became extinct shortly after humans arrived in the Great Lakes region between 10 to 12 thousand years ago.
Officials from the Cranbrook Institute of Science in Bloomfield Hills are expected to visit the site tomorrow or Tuesday to examine the remains.
A Cranbrook geologist says the remains of more than 250 mastodons have been discovered in Michigan. The mastodon became the official state fossil in 2002.