Tham khảo Lepospondyli

  1. Andrews, S.M. & Carroll, R.L. (1991) The Order Adelospondyli: Carboniferous lepospondyl amphibians. Transactions of the Royal Society of Edinburgh, Earth Sciences 82:239–275.
  2. Anderson, J. S. & Kissel, R. A. (2002) Lepospondyl diversity in the Early Permian and Late Pennsylvanian. Journal of Vertebrate Paleontology, 22(3):32A.
  3. Germain, D. (2010) The Moroccan diplocaulid: the last lepospondyl, the single one on Gondwana. Historical Biology 122(1-3):4-39.
  4. Carroll, R. L. (1988) Vertebrate Paleontology and Evolution, WH Freeman & Co.