The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky : a taxonomic study of nine species and their stratigraphic distribution in the Lexington limestone and younger Ordovician rocks
The brachiopod genera Hebertella, Dalmanella, and Heterorthina from the Ordovician of Kentucky : a taxonomic study of nine species and their stratigraphic distribution in the Lexington limestone and younger Ordovician rocks / by Laurence G. Walker
Series Titles:
Geological Survey professional paper ; 1066-M Geological Survey professional paper ; 1066-M.