Tully Monster Baseball T-Shirts

Tullimonstrum, AKA the Tully Monster may be the greatest mystery in the history of paleontology! At various times, this enigmatic animal, which lived about 300 million years ago, has been reconstructed as a fish, an arthropod, a mollusk, a worm, and more... and its true identity is still a subject for debate among paleontologists!

Tullimonstrum, AKA the Tully Monster may be the greatest mystery in the history of paleontology. This illustration shows a tullymonstum concretion, or nodule, a form in which even the delicate soft parts of this enigmatic animal are preserved.

Say hello to your new friend Tullimonstrum

This design is of a wonderfully odd creature that was alive during the Cambrian period. The creature actually existed all those years ago. The fossil remains of the Tully monster can be found throughout Pennsylvania and Illinois.

Another great illustration from renowned artist Paul Cemmick's Movie Stars Collection

A cozy little Tully monster companion for your day to day ventures!!