The origin and evolution of the middle Dinantian conodont genera Doliognathus, Dollymae, Scaliognathus, and Staurognathus, and related forms. Ronald L. Austin and Eric Groessens, Annales de la Société géologique de Belgique, Volume 95 (1972), Fascicule 2, pages 229-238 (URL, retrieved 24 April 2016)
