Trilobite

Ohio State Fossil

Ohiotrilobitefossil-Smithsonian.jpg

Ohio Trilobite at the Smithsonian

The largest Trilobite on display at the Smithsonian Natural History museum is from Ohio! Photo by Mike Rupert on Flickr (all rights reserved; used by permission).

Isotelus trilobite

Ohio designated Isotelus as the official state fossil in 1985. Isotelus is the largest known trilobite;  an extinct arthropod that lived in Ohio about 440 million years ago. Some Isotelus trilobites reached over two feet in length!

Ohio

Images

Trilobite fossil photo © William Tanneberger on Flickr (all rights reserved; used by permission).

Trilobite fossil

Videos

Introduction to Trilobites pt .1 of 2