Bones Of Contention Lab Questions Analysis Questions for Part A: 1. What is the
ID: 39668 • Letter: B
Question
Bones Of Contention Lab Questions
Analysis Questions for Part A:
1. What is the difference between cranial and post-cranial fossils?
2. Based on the available evidence, what creature do you think was the earliest biped?
3. What is the earliest sign of large leg bone? Next after that?
4. In addition to femur orientation, which features proved useful in helping you narrow your group(s)?
5. Are there any fossil records in your groups of cranial and post-cranial bipeds that might be the same species? Why?
Explanation / Answer
answer---
1)The evidence Cranial fossils may show the position of the foramen magnum which is the place where the spine enter the skull, but the evidence from the post cranial fossils may show the shape and position of the pelvis, femur,shinbones and the finger-bones as well as relative length of the limbs.
2)Australopithecus afarensis was the earliest biped.
3)Earliest sign of large leg bone is faces were larhge related to the size of the brain cases.
4) The orientation of the femoral head and femoral neck are the features which are useful in helping to narrow the groups.
5)yes, the fossils is the species of Australopithecus. The relative distribution in their body size help to do so.