Scrotifera es un sublegion de mammiferos placentari.
- ↑ "Using Novel Phylogenetic Methods to Evaluate Mammalian mtDNA, Including Amino Acid-Invariant Sites-LogDet plus Site Stripping, to Detect Internal Conflicts in the Data, with Special Reference to the Positions of Hedgehog, Armadillo, and Elephant" (in en) (1999-03-01). Systematic Biology 48 (1): 31–53. doi:10.1080/106351599260427. ISSN 1076-836X. PMID 12078643.
- ↑ Springer M. S., Murphy W. J., Eizirik E., O'Brien S. J. In: "Placental Mammals: Origins and Relationships of the Major Clades." Rose K. D., Archibald J., editor. Baltimore: Johns Hopkins; (2005.) "Molecular evidence for major placental clades"; pp. 37–49