The Smithsonian Museum of Natural History of Washington D.C. has an extensive collection of Ohio trilobites on display.  It consists...

Paradichocrinus planus crinoid calyx found in Indiana.  It existed in the early Carboniferous Period (345-325 million years ago).  Pictur...

If you are any where near Louisville, Kentucky this weekend (September 18-19, 2010) stop by the Falls of the Ohio State Park's 16th An...