Which is correct scale for a hypothetical vertebrate evolution
A
Cenozoic, mesozoic, palaeozoic, precambrian
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B
Cenozoic, palaeozoic, mesozoic, precambrian
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C
Precambrian, cenozoic, palaeozoic, mesozoic
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D
Precambrian, palaeozoic, mesozoic, cenozoic
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Solution
The correct option is A Cenozoic, mesozoic, palaeozoic, precambrian
The term Precambrian refers to the period from the formation of the Earth, about 4500 mya, to the Cambrian explosion of life that occurred 542 mya. This marked the beginning of the Paleozoic Era. After the Paleozoic era came the Mesozoic era, and then the Cenozoic era.
So, the correct answer is 'Precambrian, palaeozoic, mesozoic, cenozoic'.