Milner, A.R.; Sequeira, S.E. K. (2004). "Slaugenhopia texensis (Amphibia: Temnospondyli) from the Permian of Texas is a primitive tupilakosaurid". Journal of Vertebrate Paleontology. 24 (2): 320–325. doi:10.1671/1974.
Warren, A.A. (1999). "Karoo tupilakosaurid: a relict from Gondwana". Transactions of the Royal Society of Edinburgh: Earth Sciences. 89: 145–160. doi:10.1017/s0263593300007094.