Estimates for the divergence times between these three placental groups range from 105 to 120 million years ago, depending on the type of DNA used (such as nuclear or mitochondrial) and varying interpretations of paleogeographic data.
Estimates for the divergence times between these three placental groups range from 105 to 120 million years ago depending on the type of DNA used (such as nuclear or mitochondrial) and varying interpretations of paleogeographic data