CAS AN 102 Lecture Notes - Lecture 20: Maurice Taieb, Mandibular Symphysis, Tooth Enamel
3 Apr 2017
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Document Summary
I: anamensis (4. 2-3. 9mya, discovered by mary leakey in 1994 around lake turkana, kenya, mixed woodland, riverine forest, & open grasslands, dental, cranial, & postcranial remains, mandible. Sectorial p3 (when the canine rubs against the molar which sharpens it) Ii: afarensis (3. 9-2. 9mya, discovered by a joint french/american expedition led by maurice taieb & don. Compound temporonuchal crest (points out in the back: diastema space between canine & second incisor (chimps, sexually dimorphic (males larger than females, no evidence of stone tool making/use or hunting, probably ancestral to homo. Adult individual (3. 5ft tall; 60lbs. : brain: 400cc. L. 3. p3 morphology: non-sectorial, two cusps (first appears in a. afarensis: pelvis. Chimp: narrow & long w/ thin ilian blades in coronal plane. M. 2: afarensis & humans: broad & short w/ flared, robust iliac blades in a more sagittal plane, laetoli footprints (3. 6mya) Relatively long forelimbs continued emphasis of arboreality over bipedality.
