Sentences with phrase «placental mammals closely»
«It now appears that the major diversification of placental mammals closely followed the extinction of dinosaurs 66 million years ago, an event that would have opened up ecological space for mammals to evolve into.»
https://www.sciencedaily.com/ Not exact matches
This means that in this feature it closely resembled monotremes (egg - laying mammals like the platypus), whereas other features brought it closer to marsupials and placental mammals.