A.Proterozoic Era
B.Palaeozoic Era
C.Mesozoic Era
D.Azoic Era
Related Mcqs:
- Which of the following eras is ‘Era of Invisible Life:
- In which of the following eras, the protozoans specially shelled radiolarians flourished:
- Mammals are as old as:
- Which of the following eras in geological time-scale corresponds to the period when life had nnot originated on earth:
- First Great Revolution occurred during:
- Rocky Mountain Revolution occurred during:
- Life originated during:
- Mammals became dominant in__________??
- Universe or cosmos began as a dense, red hot, gaseous cloud about:
- Reptiles dominated during:
