Question

Phanerozoic Eon (Eon 4) had three eras. They are:

• A. 1st Era - Paleozoic, 2nd Era - Mesozoic, 3rd Era - Cenozoic
• B. 1st Era - Mesozoic, 2nd Era - Paleozoic, 3rd Era - Cenozoic
• C. 1st Era - Mesozoic, 2nd Era - Cenozoic, 3rd Era - Paleozoic
• D. 1st Era - Paleozoic, 2nd Era - Cenozoic, 3rd Era - Mesozoic

Answer 1

The correct option is A 1st Era - Paleozoic, 2nd Era - Mesozoic, 3rd Era - Cenozoic

In geological peroids of earth, four Eons are there - Azoic/Hadean, Archaeozoic, Proterozoic, Phanerozoic. In phanerozoic Eon (Eon 4), three Eras are there. They are: 1st Era - Paleozoic, 2nd Era - Mesozoic, 3rd Era - Cenozoic