Fig. 3: Binary state trait-dependent speciation estimated from FiSSE analyses.
From: The latitudinal variation in amphibian speciation rates revisited

Histograms show the distribution of speciation rates for tropical (orange) and non-tropical species (blue) estimated from 100 random trees. Each panel represents a different taxonomic grouping: (a) all amphibians, (b). anurans, (c). salamanders, and (d). caecilians. Dashed vertical lines denote the mean values of lambda obtained for each group (red for tropical; light blue for non-tropical) from the 100 random trees analyzed.