Fig. 3.

Presence of the eight HTT LINE subfamilies across the phylogeny of elapid snakes (adapted from Lee et al. [2016]). Color of lineage represents habitat—marine species are blue, terrestrial brown, and amphibious green. Each symbol represents the likely timing of horizontal transfers, for example, the square indicates the likely transfer date of both Rex1-Snek_1H1 and Rex1-Snek_2. Presence/absence determined using reciprocal BLASTN search (Altschul et al. 1990; Camacho et al. 2009) using default parameters.