Chapter 7: Old World Monkeys: The Leaf Eating Colobines
Primate evolution of old world monkeys was carried out through adaptive replacement of successful species according to the fossil record. The old world monkeys are located in some parts of Africa and Asia, however their ancestors once inhabited Europe and Africa. Their distinguishable features from new world monkeys are their “downward-turned noses, flattened nails rather than claw-like, flexible thumbs, and a variety of bodily decorations.” Old world monkeys have two subfamilies, the Colobinae with either genera and the Cercopithecinae with nine genera. The main difference of this two subfamily is their digestive system. The feeding habit of modern day Cercopithecinae are plant parts like seeds, fruits, etc. However, their ancestors were much more selective, preferring …show more content…
Both have 42 chromosomes believed to be inherited from a common ancestor during the Miocene epoch. Both groups have high sexual dimorphism and are terrestrials. There is evidence that there is dominance hierarchies in males and females. Macaques are spread throughout the planet, making them second to humans. The specie comprises of four groups, M. sylvanus is the oldest in the lineage, while fascicularis group is the most recent. Macaques reside in Asia, along with the Southeast Asian islands. Considering they are widely dispersed, Macaques live in a various environments such as forests, mountains, human buildings, etc. Their dietary preference also vary from fruits to flowers, to insects, basically classified as frugivorous. Their social organization is multi-male, multi-female group. The females stay with their natal group. Savanna Baboons have four species, the olive, yellow, chacma, and guinea baboon. All are terrestrial with various habitats. Furthermore, Baboons are the largest of the monkeys with long tails. Their dietary preference also varies, and are classified as
Primate evolution of old world monkeys was carried out through adaptive replacement of successful species according to the fossil record. The old world monkeys are located in some parts of Africa and Asia, however their ancestors once inhabited Europe and Africa. Their distinguishable features from new world monkeys are their “downward-turned noses, flattened nails rather than claw-like, flexible thumbs, and a variety of bodily decorations.” Old world monkeys have two subfamilies, the Colobinae with either genera and the Cercopithecinae with nine genera. The main difference of this two subfamily is their digestive system. The feeding habit of modern day Cercopithecinae are plant parts like seeds, fruits, etc. However, their ancestors were much more selective, preferring …show more content…
Both have 42 chromosomes believed to be inherited from a common ancestor during the Miocene epoch. Both groups have high sexual dimorphism and are terrestrials. There is evidence that there is dominance hierarchies in males and females. Macaques are spread throughout the planet, making them second to humans. The specie comprises of four groups, M. sylvanus is the oldest in the lineage, while fascicularis group is the most recent. Macaques reside in Asia, along with the Southeast Asian islands. Considering they are widely dispersed, Macaques live in a various environments such as forests, mountains, human buildings, etc. Their dietary preference also vary from fruits to flowers, to insects, basically classified as frugivorous. Their social organization is multi-male, multi-female group. The females stay with their natal group. Savanna Baboons have four species, the olive, yellow, chacma, and guinea baboon. All are terrestrial with various habitats. Furthermore, Baboons are the largest of the monkeys with long tails. Their dietary preference also varies, and are classified as