The State Fossil Fish is Dunkleosteus

The State Fossil Fish
October 29 - April 30

Museum Gallery
The Ohio Statehouse
1 Capitol Square
Columbus, OH 43215


A relplica of the State fossil fish of Ohio, Dunkleosteus terrelli, is dispalyed at the Ohio Statehouse Museum Education Center.  This 2021-2022 exhibit is courtesy of the Cleveland Museum of Natural History.  


Dunkleosteus became the official State fossil fish on March 24, 2021.  


The Ohio Revised Code says, “Dunkleosteus terrelli, a species of extinct arthrodire placoderm fish that lived in the seas that covered parts of Ohio during the Late Devonian period, about three hundred fifty-nine to three hundred eighty-two million years ago, is hereby adopted as the official fossil fish of the state.”