^Cisneros، J. C. (2008). "Phylogenetic relationships of procolophonid parareptiles with remarks on their geological record". Journal of Systematic Palaeontology. ج. 6 ع. 3: 345–366. DOI:10.1017/S1477201907002350.
^Ruta، M.؛ Cisneros، J. C.؛ Liebrecht، T.؛ Tsuji، L. A.؛ Müller، J. (2011). "Amniotes through major biological crises: Faunal turnover among Parareptiles and the end-Permian mass extinction". Palaeontology. ج. 54 ع. 5: 1117. DOI:10.1111/j.1475-4983.2011.01051.x.