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Describe the characteristics of Catarrhines

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Describe the characteristics of Catarrhines

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Catarrhines are a group of primates that includes both Old World monkeys and apes, including humans. Here are some of their key characteristics:

  1. Nasal Structure: The name 'Catarrhine' comes from the Greek words 'kata' and 'rhinos', meaning 'down' and 'nose' respectively. This refers to the downward-facing nostrils of these primates, which is a distinguishing feature.

  2. Dental Structure: Catarrhines have a dental formula of 2-1-2-3. This means they have two incisors, one canine, two premolars, and three molars in each quadrant of the mouth.

  3. Opposable Thumbs: Like most primates, Catarrhines have opposable thumbs, which allow them to grasp and manipulate objects.

  4. Size and Weight: Catarrhines vary greatly in size and weight, from the relatively small macaques to the much larger gorillas.

  5. Diet: Most Catarrhines are omnivorous, although diet can vary greatly between species. Some primarily eat fruit, while others have a diet that includes a significant amount of leaves.

  6. Social Structure: Many Catarrhines live in complex social structures. For example, baboons live in troops with a clear hierarchy.

  7. Tail: Unlike New World monkeys, Catarrhines do not have prehensile tails. Some, like apes and humans, do not have tails at all.

  8. Geographical Distribution: Catarrhines are typically found in Africa and Asia, hence the term 'Old World' monkeys and apes.

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Catarrhines’ nostrils areGroup of answer choicesclose together and face downward.large due to their heightened sense of smell.far apart and face sideways.wide and include a large nasal sinus.

The catarrhines are also known as the ____.Group of answer choicesOld World primatesNew World monkeysStrepsirrhinesLorises

Describe the characteristics of Tarsiers (Infraorder Tarsiiformes). Which tarsier traits resemble strepsirrhines, and which resemble haplorrhines?

Describe the physical, behavioral, and ecological traits of Haplorrhines (suborder Haplorrhini) compared with Strepsirrhines (suborder Strepsirrhini)

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