Tullimonstrum gregarium, Tully Monster (Pit 11) 964c4db65f9489e6f6012b3ec2a0cea1 Scientists believe they were fast

Scientists believe they were fast runners

Barite colors range from brown to white/beige depending on conditions and composition of minerals present during formation

000 known species of Trilobita

A very cool shape to accent a piece or stand alone

From its pointed teeth and the fact that many specimens are found with smaller fish within their mouths Mioplosus was determined to be an avid predator

Tullimonstrum gregarium, Tully Monster (Pit 11) 964c4db65f9489e6f6012b3ec2a0cea1 Scientists believe they were fastTullimonstrum gregarium, popularly known as The Tully Monster, is the Illinois State Fossil & is perhaps one of the most mysterious fossils ever unearthed Age of the Tully Monster During the Pennsylvanian Period (roughly 307 million years ago), the land that is now Illinois lay near Earth's equator. Dense swamps, forested with primitive plants, covered much of western and central Illinois. In shallow seas nearby, the Tully monster swam along with