Respuesta :
Paleogene Period. The Paleogene spans from the extinction of non-avian dinosaurs, 66 million years ago, to the dawn of the Neogene, 23.03 million years ago. It features three epochs: the Paleocene, Eocene and Oligocene.
Answer:
c
Explanation: what google told me-
66 million to 56 million years ago
The Paleocene epoch lasted from 66 million to 56 million years ago. Modern placental mammals originated during this time.
