AP BIOLOGY

Detailed explanation-1: -The Callitrichidae (also called Arctopitheci or Hapalidae) are a family of New World monkeys, including marmosets, tamarins, and lion tamarins. At times, this group of animals has been regarded as a subfamily, called the Callitrichinae, of the family Cebidae.

Detailed explanation-2: -There are about 42 species of small primates in this family. Marmosets and tamarins are found in Central and South America.

Detailed explanation-3: -Callitrichidae are the most diminutive of the living anthropoids [3]. The body length is 14–18 cm and the tail measures 25–32 cm in length [4]. The weight varies between 300 and 450 g [3]. The head is egg-shaped.

Detailed explanation-4: -Callitrichids (marmosets and tamarins) are unusual among primates in having a particularly flexible mating system that spans monogamy, polyandry and polygamy, associated eith twin births and male parental care.