WASHINGTON – Senator Mike Braun and Senator Gary Peters have introduced a bill to name a U.S. National Fossil, the mastodon.
Mastodon fossils are frequently found in Indiana and Michigan.
The mastodon lived more than 13,000 years ago in the Pleistocene era, predominantly on land that would eventua
The teeth were found within the Ste. Genevieve Formation rock layer and represent all known tooth positions on the mouth of both adult and juvenile sharks.