1. Primate Classification

4. ~25 million years ago: Old World Monkeys split from Hominoids, a linage that resulted in humans, gorillas and chimps ~17 million years ago: Great apes (Hominidae) including orang-utans, gorillas and humans, branched off from the lesser apes, which includes gibbons ~10 million years ago: Organ-utans branched off within the Hominidae linage ~5 million years ago: Hominids, including Homo sapiens, branched off from Chimpanzees

6. Prehensile tail that can be used as a 5 th limb Quadrupedal Strictly tree dwelling (arboreal) Widely separated nostrils

8. Tail is not prehensile Quadrupedal Some are ground dwelling Nostrils are close together and open downwards

10. No tail Semi-erect or fully erect posture Broad chest, pelvis and shoulders Relatively long arms and mobile shoulder joints Larger brain

12. Some brachiating (swinging underneath from branch to branch) Some mainly ground dwelling and quadrupedal Flattened nose Bony eye ridges

14. Bipedal Large forebrain (cerebral cortex) Reduced teeth in general, particularly canines Possessed to varying degrees Nose and chin are prominent Reduced eye ridges Highly sensitive skin * Body hair very reduced to assist cooling * Complex social behaviour * Assumed

15. Name the primate group that the organism pictured belongs to New World Monkeys Old World Monkeys Apes Hominids Give one example of a feature of this group

26. New World Monkeys Old World Monkeys Hominoids ApesHominids Prehensile tileTail not prehensileNo tail Quadrupedal Bipedal Strictly tree dwelling Some are ground dwelling Mainly ground dwellingGround dwelling Widely spread nostrils Close nostrils that open downwards Flattened noseProminent nose Body hair Body hair reduced for cooling Broad chest, pelvis and shoulders Relatively long arms and mobile shoulder joints Reduced canines and teeth in general