Keywords: OrdNautiloidInternalMold.jpg en Internal mold of a nautiloid from the Upper Ordovician of northern Kentucky Note the encruster over the mold own Wilson44691 2008-09-12 Photograph taken by Mark A Wilson Department of Geology The College of Wooster http //www3 wooster edu/geology/MWilson html Nautilida Cincinnatian Ordovician fossils from Kentucky |