1. Conodonts from the Lexington Limestone (Middle Ordovician) of Kentucky and its lateral equivalents in Ohio and Indiana;Bergström;Bull. Am. Paleontol.,1966
2. Conodonts from the Bainbridge (Silurian) of Missouri;Branson;Univ. Mo. Stud.,1933
3. Palaeogeographic history of western Thailand and adjacent parts of southeast Asia: a plate tectonics interpretation;Bunopas;Thai. Dept. Miner. Resour. Geol. Surv. Div. Pap.,1981
4. Multielement conodonts from the Brassfield Limestone (Silurian) of southern Ohio;Cooper;J. Paleontol.,1975
5. Multielement conodonts from the St. Clair Limestone (Silurian) of southern Illinois;Cooper;J. Paleontol.,1976