Interestingly, some of the physical markers that have led scientists to identify certain fossils as early hominins rather than apes are features that have been lost during subsequent human evolution. Which of the following is an example of this?
A. stereoscopic vision
B. climbing ability
C. thin enamel on teeth
D. big back teeth
E. chimplike tool use, such as termite capture
Question 2
All of the following are true about the recent discovery of the world's oldest child, dubbed Lucy's Baby, EXCEPT that
A. she is a member of Au. afarensis.
B. the 3.3-million-year-old fossilized toddler was uncovered in northern Ethiopia.
C. her remains, which are amazingly complete, include a remarkably well-preserved skull, baby teeth, tiny fingers, a torso, a foot, and a kneecap.
D. the fossil suggests that the child died because her brain, which appears to have been larger than an average chimp brain at that age, was too large for her slowly developing skull.
E. the fossil supports the theory that Au. afarensis walked upright on two legs but still retained an apelike upper body, including two complete shoulder blades similar to a gorilla's, so it could have been better at climbing than are humans.
Discovering Fossils 11-30
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