Abstract: Machairodus horribilis was erected by Schlosser in 1903, based on isolated teeth purchased from some drugstores in China. Zdansky attributed some of these teeth(P4 and C?) to his new species M. palanderi, but left the others (incisors,p4 and ml) as specifically indeterminate(Zdansky,1924:115). Otherwise, few paleontologists paid attention to Schlosser's species at all. While curating the Chinese Hipparion fauna fossils in IVPP during the early 1990's, the senior author of the present paper accidentally found two machairodont skulls collected from Baode in 1965, still unprepared. One of them turned out to be a perfectly preserved skull, while the other,a larger one, though only about half preserved, was associated with its mandible. Both were exceptionally large and possessed features shared exclusively by them. It was of particular interest that the ml of the 2nd skull seemed considerably close to that of Schlosser's M. horribilis in size and morphology. This renders it plausible to refer these two skulls to M. horribilis, and this would, in turn, rehabilitate Schlosser's M. horribilis. The other reason for presenting the present paper now is the recently emerged possibility of making more detailed comparison between the Chinese and the classical European Machairodus species. For this we owe much to the two recently published articles on the skulls and mandibles of M. aphanistus and M. giganteus (Anton et al.,2004; Geraads et al.,2004).