We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleAn Early Cretaceous tribosphenic mammal and metatherian evolution.AuthorsLuo ZX; Ji Q; Wible JR; Yuan CXPublicationScience (New York, N.Y.), 2003, Vol 302, Issue 5652, p1934ISSN1095-9203Publication typearticleDOI10.1126/science.1090718