Left, intracontinental disjunction in Nolana in the Atacama and Peruvian deserts (Dillon et al., this issue); upper right, hypothesized intercontinental and intracontinental dispersal routes in Ephedra (Ickert-Bond et al., this issue); lower middle, leaf fossil of Aesculus hickeyi S. R. Manchester with five leaflets from the Paleocene of North Dakota, courtesy of Steven R. Manchester; lower right, probabilities of ancestral ranges inferred for sect. Aesculus using the revised Bayes-DIVA method (Harris & Xiang, this issue).. Aesculus using the revised Bayes-DIVA method (Harris & Xiang, this issue). [Detail] ...