Hillis, D M SINEs of the perfect character. [electronic resource] - Proceedings of the National Academy of Sciences of the United States of America Aug 1999 - 9979-81 p. digital Publication Type: Comment; Journal Article; Review ISSN: 0027-8424 Standard No.: 10.1073/pnas.96.18.9979 doi Subjects--Topical Terms: AnimalsArtiodactyla--classificationCetacea--classificationEvolution, MolecularInterspersed Repetitive SequencesMammals--classificationPhylogeny