Final answer:
The four major periods of primate evolution are the Paleocene Epoch, Eocene Epoch, Oligocene Epoch, and Miocene Epoch.
Step-by-step explanation:
The four major periods of primate evolution are:
- Paleocene Epoch (approximately 65 MYA to 54 MYA): This epoch offers the first record of the earliest primates, with Purgatorius being a potential common ancestor.
- Eocene Epoch (approximately 55 MYA to 34 MYA): This epoch saw the emergence of the first true primates, resembling present-day prosimians such as lemurs.
- Oligocene Epoch (approximately 34 MYA to 22 MYA): The first fossil monkeys appeared during this epoch, and they are believed to be the earliest New World and Old World monkeys.
- Miocene Epoch (approximately 23 MYA to 5 MYA): Apes evolved during this epoch from catarrhine primates in Africa.