Final answer:
Adapids are believed to be ancestral to strepsirrhines, which include modern lorises and lemurs, part of the Strepsirrhini clade of the Order Primates. These ancient primates branched off after the dinosaurs, leading to various ecological adaptations in their descendants.
Step-by-step explanation:
The descendants of adapids, which are primates from the Eocene epoch, are believed to be related to today's strepsirrhine primates. The adapids are thought to resemble modern lorises, lemurs, and other prosimians, which are part of the Strepsirrhini clade. Modern primates, including humans, belong to the Order Primates, which diversifies into two broad groups, namely the Strepsirrhini and the Haplorhini. The latter includes tarsiers, monkeys, apes, and humans.
During the evolutionary history of primates, the adapids likely gave rise to the strepsirrhines, while another group known as the omomyids is considered to be ancestral to the haplorhines. This evolutionary branching is a result of the amazing diversification that took place after the dinosaurs, around 60 million years ago. These groups adapted to various ecological niches, with some being nocturnal and arboreal, while others evolved larger brains and became more diurnal.