Strepsirrhini includes lemurs, lorises, and galagos, which are considered more primitive primates.
Haplorhini includes tarsiers, monkeys, and apes, and is further divided into two parvorders:
* Platyrrhini (New World Monkeys)
* Catarrhini (Old World Monkeys and Apes)
Here's a breakdown of the classification of monkeys:
Order: Primates
Infraorder: Haplorhini
Parvorder:
* Platyrrhini (New World Monkeys):
* Family: Cebidae (Capuchin monkeys, squirrel monkeys, marmosets)
* Family: Aotidae (Night monkeys)
* Family: Pitheciidae (Titi monkeys, sakis, uakaris)
* Family: Atelidae (Howler monkeys, spider monkeys, woolly monkeys)
* Catarrhini (Old World Monkeys and Apes):
* Family: Cercopithecidae (Old World Monkeys)
* Subfamily: Cercopithecinae (Baboon, macaque, mangabey, mandrill, guenon)
* Subfamily: Colobinae (Colobus, langur, proboscis monkey)
Key Differences between New World and Old World Monkeys:
* Nose: New World monkeys have flat noses with outward-facing nostrils, while Old World monkeys have narrow noses with downward-facing nostrils.
* Tail: Most New World monkeys have prehensile tails that can grasp objects, while Old World monkeys have non-prehensile tails, except for the Barbary macaque.
* Habitat: New World monkeys live in the Americas, while Old World monkeys live in Africa and Asia.
Remember: This classification is constantly evolving as new research emerges.
This classification helps us understand the evolutionary relationships between different monkey species and their unique adaptations.