A reappraisal of tyrannosauroid fossils from the Iren Dabasu Formation (Coniacian–Campanian), Inner Mongolia, People’s Republic of China

The hind limb of the lectotype Alectrosaurus olseni is described in comparison with other tyrannosauroids. In addition to autapomorphies for by previous workers, taxon possesses a specialized pes, where distal condyles metatarsals and most phalanges are strongly elevated beyond dorsal ventral surfaces shaft each bone, here as ‘pediculate’ condition. lectotype, previously reported Tyrannosaurus bataar material from Turonian Uzbekistan, fossils Kyzylkum Desert, not referable Alectrosaurus. A partial skull Iren Dabasu Formation A. because lack shared diagnostic bones between it lectotype. Several features skull, holotype Raptorex, an isolated juvenile T. rex lacrimal, exclusion derived