Consider the following events: 1) First reptiles 2) First insects 3) Shelled animals 4) First mammals Arrange the above events in the chronological order of their origin on the Earth, and select the correct answer from the codes given below:

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CollectorBabu · Accepted Answer

Correct Answer: 3 2 1 4. During the evolution, organisms started to evolve from primitive to complex one. The chronological order of their origin on the earth is - Shelled animals (543–488 million years ago), The fossil remains of some of the first animals with shells, ocean-dwelling creatures that measure a few centimeters in length and date to about 520 million years ago, provide a window on evolution at this time, according to scientists. Their research indicates that these animals were larger than previously thought. First insects, First reptiles, First mammals. Therefore, the correct answer is option C.

Consider the following events: 1) First reptiles 2) First insects 3) Shelled animals 4) First mammals Arrange the above events in the chronological order of their origin on the Earth, and select the correct answer from the codes given below:

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