Final answer:
Lemurs are examples of prosimians, which are a group of primates that also include bush babies, lorises, pottos, and tarsiers. Prosimians are characterized by being nocturnal, smaller in size compared to other primates, and having relatively smaller brains.
Step-by-step explanation:
Lemurs are examples of prosimians. Prosimians are a group of primates that includes lemurs of Madagascar, bush babies of Africa, and lorises, pottos, and tarsiers of Southeast Asia. Lemurs are nocturnal, smaller in size compared to anthropoids (monkeys, lesser apes, and great apes), and have relatively smaller brains.