Lee, Michael S. Y.; Palci, Alessandro; Jones, Marc E. H.; Caldwell, Michael W.; Holmes, James D.; Reisz, Robert R. (2016-11-01). "Aquatic adaptations in the four limbs of the snake-like reptile Tetrapodophis from the Lower Cretaceous of Brazil". Cretaceous Research. 66: 194–199. doi:10.1016/j.cretres.2016.06.004. ISSN0195-6671.
Lee, Michael S. Y.; Palci, Alessandro; Jones, Marc E. H.; Caldwell, Michael W.; Holmes, James D.; Reisz, Robert R. (2016-11-01). "Aquatic adaptations in the four limbs of the snake-like reptile Tetrapodophis from the Lower Cretaceous of Brazil". Cretaceous Research. 66: 194–199. doi:10.1016/j.cretres.2016.06.004. ISSN0195-6671.