1 Text S1 Taxonomic authorities used for our sample of 107 alien reptile and amphibian 2 species 3 For amphibians, we used the ‘‘Amphibian Tree of Life’’ (1) and the online database 4 ‘‘Amphibian Species of the World’’ (ASW) (2). For reptiles, we used Zug et al. (3) 5 and Han et al. (4) for squamates and crocodilians, Slowinski and Lawson (5) and 6 Lawson et al. (6) for Serpentes, and Gaffney and Meylan (7) and Spinks et al (8) for 7 turtles. 8 9 10 References 1. Frost D.R., Grant T., Faivovich J., Bain R.H., Haas A., Haddad C.F.B., De Sa 11 R.O., Channing A., Wilkinson M., Donnellan S.C., Raxworthy C.J., 12 Campbell J.A., Blotto B.L., Moler P., Drewes R.C., Nussbaum R.A., Lynch 13 J.D., Green D.M. & Wheeler W.C. (2006). The amphibian tree of life. B. Am. 14 Mus. Nat. Hist., 8-370. 15 2. Version 3(0):22. 16 17 3. Zug G.R., Vitt L.J., & Caldwell J.P. (2001). Herpetology: an introductory biology of amphibians and reptiles.Academic Press. 18 19 Frost D.R. (2004). Amphibian species of the world: an online reference. 4. Han D., Zhou K., & Bauer A.M. (2004). Phylogenetic relationships among 20 gekkotan lizards inferred from Cmos-nuclear DNA sequences and a new 21 classification of the Gekkota. Biol. J. Linn. Soc. 83:353-368. 22 5. Slowinski J.B. & Lawson R. (2002). Snake phylogeny: evidence from nuclear and mitochondrial genes. Mol. Phylogenet. Evol.24:194-202. 23 24 6. Lawson R., Slowinski J.B., Crother B.I., & Burbrink F.T. (2005). Phylogeny 25 of the Colubroidea (Serpentes): new evidence from mitochondrial and 26 nuclear genes. Mol. Phylogenet. Evol. 37:581-601. 27 7. and classification of the tetrapods 1:157-219. 28 29 Gaffney E.S. & Meylan P.A. (1988). A phylogeny of turtles. The phylogeny 8. Spinks P.Q., Shaffer H.B., Iverson J.B., & McCord W.P. (2004) Phylogenetic 30 hypotheses for the turtle family Geoemydidae. Mol. Phylogenet. Evol. 31 32:164-182.