Model comparisons on the ancestral range reconstruction of <i>Bothrops</i> forest clade performed with the phylogeny generated in this work.

d, e and w are free parameters in models where d is the rate of range expansion (i.e. dispersal), e is the rate of range contraction (i.e. extinction), and w is a dispersal multiplier parameter. As the time stratified matrix (TS models) were generated with arbitrary numbers, the “+w” models leave the w parameter free and the matrix itself is raised to the w parameter to seek the best dispersal multiplier values. Best models (DECTS and DIVALIKETS) are highlighted.