Species trees of three Chilean freshwater taxa, climate change and major episodes of sea level changes documented over the last 6 million years. Sea level changes (in blue, with max/min-bars) estimated from the Bay of Tongoy, Chile (Figure 1;). Jagged lines indicate climate change inferred from benthic δ18O obtained from 57 globally distributed sites . Pleistocene period indicated with gray background. Lower boundary of the Miocene epoch showed with a vertical dashed line. Species of Aegla with asterisks occur in Argentina. Letters refer to nodes discussed in the text and table 1. Posterior probabilities for nodes are below or next to node labels. Horizontal dashed lines are the 95% HPD estimates of the node dates.
Barber et al. BMC Evolutionary Biology 2011 11:343 doi:10.1186/1471-2148-11-343