“Trilobites were arthropods with segmented bodies, paired jointed legs and an exoskeleton. Modern arthropods are made up of insects, spiders, millipedes and crustaceans.”
Southwestern Ohio hides the secrets of creatures that swam in the ancient Ordovician Seas that covered most of the state and parts of surrounding states. Isotelus trilobites once lived, thrived and died in what are now the rocks, cliffs, quarries and streambeds of Ohio.