Final answer:
Strepsirrhines, also known as prosimians, are primitive primates with traits such as a grooming claw and toothcomb. This suborder includes lemurs, lorises, and bush babies, predominantly found in the Old World, and they are typically nocturnal with larger olfactory centers.
Step-by-step explanation:
Strepsirrhines, or prosimians, are a group of primitive primates that are thought to have evolved earlier than other primate suborders. Members of this suborder, which includes lemurs, lorises, and bush babies, exhibit characteristics such as a grooming claw on the second toe and a distinctive dental feature known as a toothcomb. Primarily found in the Old World regions of Africa, Asia, and Europe, strepsirrhines are noted for their nocturnal behavior, larger olfactory centers in the brain, and a dependency on their strong sense of smell. Unlike haplorrhines, strepsirrhines can produce their own vitamin C, whereas haplorrhines must obtain it through their diet.
Analysis of primate evolution and classification illustrates that strepsirrhines belong to one branch of the Order Primates, the other being haplorrhines or anthropoids, which include tarsiers, monkeys, apes, and humans. Prosimians are generally smaller in size and possess smaller brains compared to their anthropoid counterparts. The pygmy slow loris (Nycticebus pygmaeus), found in regions like Vietnam, Laos, and China, serves as an example of a strepsirrhine primate.