Ordovician Weekly has a story about the Digital Atlas of Ordovician Life site. The Ordovician Atlas has a massive amount of information about the life of the Cincinnati Arch. All of the expected animals are there, Arthropoda, Brachiopoda, Bryozoa, Cnidaria, Echinodermata, Hemichordata, and Mollusca. There are pictures for identification, notes on the geology of the area, geographic occurrence maps, and (most important) links to places for collecting. It looks like it's part of a larger NSF project to document the history of life.
Here is a paper that describes the site in detail.
