The Toumai fossil, or Sahelanthropus tchadensis, is unique because __________.
a. its features suggest it may actually be the earliest member of Homo
b. it had ape-like facial features but cranial characteristics suggesting bipedalism
c. it provides the earliest evidence of stone tool use
d. it is the oldest hominin fossil ancient DNA as been extracted from
Question 2
Why has the Great Rift Valley of Africa been so important to paleoanthropologist s?
a. The desert environment has made it easy to find fossils.
b. Volcanic activity has helped to date the fossils found there.
c. The numerous caves there have helped preserve ancient hominin remains.
d. Fossils there contain more ancient DNA than those found in other areas.
Unique markings identify individual humpback whales.
Comparison of clinical features
Monkeys and apes such as this chimpanzee can be recognized in the fossil record by the anatomy of th
Gary Alvis, The Painted Hills, John Day Fossil Beds National Monument, Oregon.
The major internal features of a neuron.
The origin and spread of modern H. sapiens, reconstructed from genetic and fossil evidence.