Fossil hunters have been finding samples of Illinois' state fossil in the Mazon Creek area for decades but no one has ever been able to say exactly what a Tully monster is. That changes Thursday, March 17, 2016, with the publication of a paper in the journal Nature.
The Tully monster, an oddly configured sea creature with teeth at the end of a narrow, trunk-like extension of its head and eyes that perch on either side of a long, rigid bar, has finally been identified.
