Origin of Primates: The primates appeared about 65 million years from the shrew link small insectivores. The shrew were long tailed squirrel-like creatures, similar to present day shrews. It give rise to primitive primates such as lemurs and tarsiers (Figure 10.3). These primates are collected termed as prosimians, the animals appeared before monkey and apes. These mammals have acquired 5 important features to maintain tree life. These are as follows:

1. Bipedal Locomoation:

2. Grasping Hand and Feet:

3. Streoscopic Vision:

4. Reduction in Snout:

5. Enlargement of Brain

Figure 10.3 : Common Primates.