Welcome to the Digital Atlas of Ordovician Life in the Cincinnati Arch region which includes Southwestern Ohio, Southeastern Indiana, and Northern Kentucky.  The sedimentary rocks of this region include a diverse fauna of over 470 genera and over 1200 species (comprehensive list here).  The goal of this atlas is to provide a guide to the identification, ecology, and distribution of the most common members of this biota.

The Ordovician spans from approximately 485 to 443 million years ago. Currently, the atlas highlights species specifically from the Late Ordovician. Common organisms from this period include (but are not limited to): brachiopods (e.g., lamp shells), bryozoans (e.g., moss animals), echinoderms (e.g., crinoids or sea lilies), cnidarians (e.g., corals), bivalves (e.g., clams), gastropods (e.g., snails), cephalopods (e.g., nautiloids), and arthopods (e.g., trilobites).

The Ordovician Atlas is currently under construction, and we will continue adding information throughout the 2015-2016 academic year!  Visit the Project Overview page for more about the scientists, students, and institutions involved.

Cincinnatian Phyla in the Atlas