An expert from the University of Michigan Museum of Paleontology confirmed the find and says the bones are from a male mastodon, about age 40, that lived between 10,000 and 14,000 years ago, reports the Lansing State Journal.
In Alaska, meanwhile, the study of mastodon teeth has solved a longstanding puzzle, reports Alaska Dispatch News. Carbon dating had suggested that mastodons roamed Alaska between 10,000 and 75,000 years ago, but that never quite made sense: Alaska had few trees then and mastodons had teeth tailor-made for chomping wood.
The new study of tooth enamel shows that mastodons were in the region much earlier, about 120,000 years ago, when trees were more plentiful. (A newly discovered fossil reveals that Scotland once had something akin to a sea monster.)
This article originally appeared on Newser: Michigan Neighbors Unearth Mastodon Bones in Backyard