metatherian
1. Luo Z., Ji Q, Wible J., Yuan C.2003.An Early Cretaceous Tribosphenic Mammal and Metatherian Evolution. Science 302 1934-1940.
李传夔,王元青,胡耀明,孟津.2003.热河生物群中戈壁兽一新种:其时代意义及哺乳动物若干特征演化.科学通报48(2):177-182.