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Lecture 7

Lecture 7 - What is a primate - October 23.docx

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Keriann Mc Googan

October 23, 2012. Lecture 7 – What is a Primate? What is a primate?  Members of mammalian order Primates  Includes lemurs, lorises, tarsiers, monkeys, and apes Classification  Class, order, genus, species  Order Primates: Strepsirhini and Haplorhini  Strepsirhini: Lemurs and Lorises  Haplorhini: Tarsiers, Old world monkeys, New World Monkeys, … etc. Helpful Hints for Remembering Classification  Superfamily – ends in “oidea”  Family – ends in “idae”  Subfamily – ends in “inae” Primates are Generalized  Generalized = traits that are flexible and can be adapted for many functions  Retained several ancestral mammalian traits o E.g. number of digits Primate Characteristics  Limbs and Locomotion o Erect posture  Derived trait  Associated with sitting, leaping, standing, and bipedal walking o Flexible, generalized limb structure  Allows primates to practice various locomotor behaviours  E.g. rotation of forearm o Prehensile (adapted for grasping) hands (and sometimes feet)  Derived trait  Allows for grasping and manipulation of objects o Five digits (pentadactyly)  Exception: Muriquis (new world, lives in central and south America)  Opposable thumb (other than muriquis)  Precision grip  Nails instead of claws  Tactile pads on ends of digits  Exception: aye aye has claws  Diet and Teeth o Generalized diet (can eat a wide range of foods)  Ancestral trait
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