Amphibians
Jenkins, F. A., jr, Shubin, N. H., Gatesy, S. M., and Warren, A., 2008, Gerrothorax pulcherrimus from the Upper Triassic Fleming Fjord Formation of East Greenland and a reassessment of head lifting in temnospondyl feeding: Journal of Vertebrate Paleontology, v. 28, n. 4, p. 935-950.
Read more about this topic: 2008 In Paleontology