Correct option:(C)
Solution:
- Coenozoic era (65 million years ago) is also known as “age of mammals”.
- It rise of first placental mammals, their diversification and evolution.
- Palaeozoic era is marked by appearance of small marine reptiles and largest mass extinction.
- Mesozoic era (from 230 million yrs ago to 63 million yrs ago) is the era of medieval life and is also known as age of reptiles.
- Proterozoic era (2000 million yrs ago) is marked by build up of oxygenic atmosphere and appearance of first eukaryotic cell.