QUAH, E. S., GRISMER, L. L., JETTEN, T., WOOD, P. L. J., MIRALLES, A., SAH, S. A. M., GUEK, K. H., & 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), 366–378. https://doi.org/10.11646/zootaxa.4441.2.10