Paleozoic sequence stratigraphy, biostratigraphy, and biogeographyJ. G. Johnson, Gilbert Klapper, Michael A. Murphy, John A. Talent · First published 1997Open the Tome
Silurian-Lower Devonian conodont sequence in the Roberts Mountains Formation of central NevadaGilbert Klapper · First published 1974Open the Tome
Patrognathus and Siphonodella (Conodonta) from the Kinderhookian (Lower Mississippian) of western Kansas and southwestern NebraskaGilbert Klapper · First published 1971Open the Tome
Upper Devonian and Lower Mississippian conodont zones in Montana, Wyoming, and South DakotaGilbert Klapper · First published 1966Open the Tome
