Citation: W. Campbell K. S. et E. Barwick R., The structure and stratigrafy of Speonesydrion from New South Wales, Australia, and the dentition of primitive dipnoans, Palaontologische Zeitschrift Palaontologische Zeitschrift (Print);Journal of Palaontologische Gesellschaft Scientific contributions to palaeontology, 81(2), 2007, pp. 146-159