What is a key characteristic of the early Miocene period?

The early Miocene period, which dates from about 24 to 16 million years ago, is marked by significant evolutionary developments, particularly regarding primates. One key characteristic of this period is the emergence of Old World monkeys. This lineage includes species that evolved in Africa and later spread to Eurasia. The diversification of Old World monkeys during this time set the stage for the further radiation of primate species and played a crucial role in primate evolution.

Understanding the evolutionary timeline is critical, as the emergence of Old World monkeys represents a foundational shift in primate ecology and morphology, distinguishing them from other primate groups that had previously dominated. The diversification and adaptability of Old World monkeys during the early Miocene is a vital aspect of primate evolution that eventually influenced modern primate species, including human ancestors.