Tarsus of the Cretaceous stem therian Eomaia and Cretaceous metatherians. A–F isolated calcaneum (A–C) (cf. Sulestes?) from the Bissetky Locale, Uzbekistan in dorsal (A), ventral (B), and distal (C) views after Szalay and Sargis (2006). D–F isolated astragalus (cf. Sulestes?) from the Bissetky Locale, Uzbekistan in dorsal (D), ventral (E), and distal (F) views after Szalay and Sargis (2006). G articulated partial pes of Sinodelphys in ventral view H–I calcaneum and astragalus, respectively, of Eomaia in ventral view J–K calcaneum and astragalus of Sinodelphys, respectively, in ventral view L–M calcaneum and astragalus of Protolambda, respectively, in ventral view G–M are after Luo et al. (2003). Scale bars equal 1 mm.