fa25-anthro105 anthro105
Lecture 17: Hominin Origins Lecture 17: Hominin Origins
Content locked
The catalog is public. Reading this content requires approved access.
Sign in to readLecture 17: Hominin Origins
Important Announcements
Exam 3 - Monday, November 10
Thanksgiving Week Schedule
Hominoids vs. Hominins: Defining Our Lineage
Hominoids (Apes)
Hominins
How Modern Humans Differ from Other Apes
Five Major Differences
What It Takes to Be a Biped: Anatomical Adaptations
Cranial Features of Bipedalism
Spine: Lumbar Lordosis
Pelvis: Short and Stout
Pelvis: Abductor Muscles
Knee: Bicondylar Angle
Foot and Ankle
Why Bipedalism? Hypotheses for the Origin
1. Feeding Adaptation
2. Carrying and Provisioning
3. Thermoregulation
4. Energetics
Climate Change and Hominin Environments
Pliocene-Pleistocene Climate
Early Hominins: Sahelanthropus
Sahelanthropus tchadensis
Sahelanthropus: Femur Evidence
Early Hominins: Orrorin
Orrorin tugenensis
Early Hominins: Ardipithecus kadabba
Ardipithecus kadabba
Ardipithecus kadabba: Toe Bone Evidence
Early Hominins: Ardipithecus ramidus
Ardipithecus ramidus (“Ardi”)
Ardipithecus ramidus: Locomotion
Ardipithecus ramidus: Pelvis
Ardipithecus ramidus: Skull
Ardipithecus ramidus: Teeth
Ardipithecus ramidus: Canines
Ardipithecus ramidus: Cranial Morphology
Timeline of Early Hominins
Hominin Diversification 2-4 Million Years Ago
Geographic Distribution
Timeline of Hominin Species (8-1 mya)
Connections to Course Themes
Building on Previous Lectures
Looking Forward to Later Lectures
Key Takeaways