Karklins, O. L. (1984). Trepostome and cystoporate bryozoans from the Lexington Limestone and the Clays Ferry Formation (Middle and Upper Ordovician) of Kentucky. U.S. geological survey, professional paper, 1066-I: 1-105
371364
Karklins, O. L.
1984
Trepostome and cystoporate bryozoans from the Lexington Limestone and the Clays Ferry Formation (Middle and Upper Ordovician) of Kentucky.