Chapter 14: Identifying the Human Linage - Lab
How does this adaptation help the primate to move bipedally? (Lab 14: Identifying the Human Linage)
- Balances the cranium on the spine - It helps in effective weight transfers
Adaptations see in this primate's femur indicates bipedal locomotion. (Lab 14: Identifying the Human Linage)
- Femur is long and angled - Neck of femur is long
Exercise 7 Examine the photo. What adaptation for bipedalism are seen in the Ardipithecus Ramidus pelvis? (Lab 14: Identifying the Human Linage)
- Pelvis is broad and bowl shape - Iliac crests (rim of ilium bone) are falred - Pelvis is not long and narrow
Which adaptation(s) seen in this primates's pelvis indicates bipedal locomotion (Lab 14: Identifying the Human Linage)
- Pelvis is shorter and broader - Pelvic outlet is large
The pre-australopith fossils are especially significant because they challenge some of the long-standing explanations of our evolutionary history. For what reasons does the pre-australopiths force us to rethink the savanna hypothesis in particular?(Check all correct reasons) (Lab 14: Identifying the Human Linage)
- Plant and animal remains indicate they lived in the forest - Ardi's foot was grasping, hence was arboreal too - Pre-australopiths had long arms
Which two adaptation seen in this primate's vertebral column indicate bipedal locomotion. (Pick 2 correct answers) (Lab 14: Identifying the Human Linage)
- Spine is S shaped - Spine has a thoracic and a lumbar curve
Which adaptations seen in this primate's foot indicate bipedal locomotion? (Lab 14: Identifying the Human Linage)
- Toes are short - Foot has a longitudinal arch - Hallux is not divergent
I lived about 4.4 mya in eastern Africa. I had long arms and fingers and a relatively short, broad pelvis. (Lab 14: Identifying the Human Linage)
Ardipithecus ramidus
Describe one adaptation seen in this primate's cranium that indicates bipedal locomotion (Lab 14: Identifying the Human Linage)
More basal foramen magnum
I lived about 6 mya in eastern Africa. My femurs had long necks with grooves for my obturator externus muscles. (Lab 14: Identifying the Human Linage)
Orrorin tugenensis
Exercise 3 Examine the skeletal material. Which mystery primate is bipedal? (Lab 14: Identifying the Human Linage)
Pelvis A
Exercise 2 Examine the skeletal material. Which mystery primate is bipedal? (Lab 14: Identifying the Human Linage)
Primate A
Exercise 5 Examine the skeletal material. Which mystery primate is bipedal? (Lab 14: Identifying the Human Linage)
Primate B
Exercise 6 Examine the skeletal material. Which mystery primate is bipedal? (Lab 14: Identifying the Human Linage)
Primate B
I lived about 7 to 6 mya in central Africa. I had a small cranial capacity, a large brow ridge, and an anteriorly positioned foramen magnum. (Lab 14: Identifying the Human Linage)
Sahelanthropus tchadensis
Exercise 1 Examine the skeletal material. Which mystery primate is bipedal? (Lab 14: Identifying the Human Linage)
Skull A
