Fig. 6. Biochronological correlation of early and middle Eocene mammal levels from Indo−Pakistan (right) to the Asian Land Mammal Age (left) defined in East and Central Asia. Circles indicate the presence of perissodactyl families in a biochronological interval in East and Central Asia, stars indicate their presence in Indo−Pakistan. Gray symbols indicate taxonomic uncertainties. The faunas from the middle Ghazij Formation and from the lower part of the upper Ghazij Formation lack tapiromorphs and other biochronologically informative taxa, and are characterized by an abundance of Quettacyonidae and Tillodontia. Asian mammal biochronology is based on Tsubamoto et al. (2004) and Missiaen (2011). Abbreviations: U. Upp. Ghazij, upper part of the upper Ghazij Formation; L. Upp. Ghazij, lower part of the upper Ghazij Formation.