Final answer:
Tarsiers, part of the Haplorhini group, have prosimian traits like nocturnal lifestyle and large eyes for night vision, along with a primitive shoulder structure and curved fingers for climbing. They possess a unique trait as the only carnivorous primates and are small with comparatively smaller brains.
Step-by-step explanation:
The Tarsier, belonging to the family Tarsiidae, exhibits characteristics of both prosimians and anthropoids, placing them in a unique position within the primate classification. They are part of the Haplorhini group, often referred to as "simple-nosed" primates. One of their distinct prosimian traits is their nocturnal habit, with exceptionally large eyes that assist in low-light conditions. These eyes are so large that tarsiers cannot rotate them and instead can rotate their heads nearly 360 degrees, similar to an owl. Additionally, tarsiers have primitive traits such as being small in size, having a relatively smaller brain compared to other primates, and a primitive shoulder position that favors climbing and swinging. Their long fingers, which curve, suggest an adaptation to an arboreal lifestyle, a characteristic they share with other primates, indicating their evolutionary past. Tarsiers are the only entirely carnivorous primates, preying on insects and small vertebrates.