Question

What does the fossil record tell us about the evolution of the hominin skull?

1. the face stuck out farther from the rest of the skull hominins evolved

2. the part of the skull surrounding the brain grew larger as hominins evolved

3. the face grew wider as hominins evolved

4. the part of the skull surrounding the brain grew more pointed as hominins evolved

Answer 1

5. the brow ridges decreased in size as hominins evolved

6. the dental arcade changed from a U-shape to a parabolic shape as hominins evolved

7. the size of the brain cavity increased over time in hominins

8. the position of the foramen magnum shifted from the back of the skull to the bottom as hominins evolved, indicating bipedalism.