1. Conodonts from the New Albany Shale of Indiana;Huddle;Bull. Amer. Palaeont.,1934
2. Conodonts of the Barnett Formation of Texas;Hass;U.S. Geol. Survey Prof. Paper,1953
3. Conodonts from the Late Mississippian Pella beds of south-central Iowa;Youngquist;Journ. Palaeont.,1949
4. Caney conodonts of Upper Mississippian age;Branson;Denison Univ. Bull.,1940