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Illinois State Fossil

Tully monster fossil & model - click to see all state fossils & dinosaurs
Tully monster fossil and model at Chicago Field Museum; photo by Brian Smith
on Flickr (noncommercial use permitted with attribution / share alike)
All state fossils & dinosaurs.

Tully Monster

Tully Monster video

The Tully monster (Tullimonstrum gregarium) was designated the official state fossil of Illinois in 1989. The Tully monster was a soft-bodied prehistoric marine animal which lived 280 to 340 million years ago during the Pennsylvanian geological period. So far Tully monster fossils are unique to Illinois - more than 100 Tully monster fossils have been found in the state (amateur collector Francis Tully found the first in 1958).

Tully monster artwork - click to see all state fossils & dinosaurs
Drawing of Tullimonstrum gregarium swimming through seaweed. Below the Tully monster is a string of aitches (Etacystis communis) - above are a pair of crustaceans (Cyclus americanus); artwork by user Apokryltaros on Wikipedia (GNU Free Documentation License Version 1.2 or later). All state Fossils & Dinosaurs.
Source:
Learn Illinois Symbols: Illinois official website kids page
Tullimonstrum gregarium: Wikipedia.org
Links:
All state Fossils & Dinosaurs


    

 

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