Frey, Robert C. <br/><br/>
Middle and Upper Ordovician nautiloid cephalopods of the Cincinnati arch region of Kentucky, Indiana, and Ohio / 
by Robert C. Frey 
 - Washington, D.C. :  U.S. Department of Interior,  1995 
 - iii, 126 p., [22] p. of plates :  ill., , 1 map  ;  30 cm. 
 - U.S. Geological Survey professional paper ;  no.1066-P Contributions to the Ordovician paleontology of Kentucky and nearby states .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nautiloidea, Fossil--Indiana<br/>Nautiloidea, Fossil--Ohio<br/>Paleontology--Ordovician<br/>Animals, Fossil--Kentucky<br/>Animals, Fossil--Indiana<br/>Animals, Fossil--Ohio
<br/><br/><label>Dewey Class. No.: </label>564.520977