Chapter:

Evolution

 Which one is a match?
(i) Cenozoic: 2 - 65 mya: Origin of vertebrates
(ii) Palaeozoic: 500 - 165 mya: Rise of egg-laying mammals
(iii) Mesozoic: 135 - 225 mya: Reptiles dominant 
(iv) Proterozoic: 350 - 600 mya: Trilobites dominant.