Due to the abundance of life in the Ordovician ocean, southwestern Ohio is one of the best Ordovician fossil collecting sites in the world. The great number of fossils shows the nature of life in ...

There are several great nearby places to see geology for yourself, whether you're interested in collecting Late Ordovician fossils, exploring glacier-carved landscapes, or observing streams as they ...

3 min read During the Ordovician period ... known mainly from the tiny fossil teeth they left behind. The few complete fossils that have been found suggest they were finned, eel-like creatures ...