Tully Monster - weird, extinct, but there are some living animals like it today [5:35]

Tully Monster (Tullimonstrum) - is probably the weirdest animal that ever lived- the true story of the Illinois state fossil, how it was found and what it is.The Tully Monster was found not too far from Chicago, Illinois, in 1955, by fossil hunter Francis Tully. Its soft body was remarkably well preserved in the shale of Mazon Creek, near the coal pits of Braidwood, Illinois. But what is this weird creature? It lived 300 million years ago in the Carboniferous period, the age of ferns and coal, but did it leave any clues of what animals living today it resembles...