QUAH, E.S., GRISMER, L.L., JETTEN, T., WOOD, P.L.J., MIRALLES, A., SAH, S.A.M., GUEK, K.H. and BRADY, M.L. 2018. The rediscovery of Schaefer’s Spine-jawed Snake (<em>Xenophidion</em> <em>schaeferi</em> Günther &amp; Manthey, 1995) (Serpentes, Xenophidiidae) from Peninsular Malaysia with notes on its variation and the first record of the genus from Sumatra, Indonesia . Zootaxa. 4441, 2 (Jun. 2018), 366–378. DOI:https://doi.org/10.11646/zootaxa.4441.2.10.