The Mesozoic era is nicknamed the Age of Reptiles and the Cenozoic era is nickna

Question

The Mesozoic era is nicknamed the Age of Reptiles and the Cenozoic era is nicknamed the Age of Mammals. What do these nicknames mean? Answers: They indicate that the two eras are about the same length, because one lineage dominates the fauna of Earth only for a set period of time. They identify the time of greatest diversity of these groups in the fossil record. They identify the point of origin of these groups in the fossil record. Both A and C are true. Both B and C are true. The Mesozoic era is nicknamed the Age of Reptiles and the Cenozoic era is nicknamed the Age of Mammals. What do these nicknames mean? They indicate that the two eras are about the same length, because one lineage dominates the fauna of Earth only for a set period of time. They indicate that the two eras are about the same length, because one lineage dominates the fauna of Earth only for a set period of time. They identify the time of greatest diversity of these groups in the fossil record. They identify the time of greatest diversity of these groups in the fossil record. They identify the point of origin of these groups in the fossil record. They identify the point of origin of these groups in the fossil record. Both A and C are true. Both A and C are true. Both B and C are true. Both B and C are true. The Mesozoic era is nicknamed the Age of Reptiles and the Cenozoic era is nicknamed the Age of Mammals. What do these nicknames mean? Answers: They indicate that the two eras are about the same length, because one lineage dominates the fauna of Earth only for a set period of time. They identify the time of greatest diversity of these groups in the fossil record. They identify the point of origin of these groups in the fossil record. Both A and C are true. Both B and C are true.

Explanation / Answer

The answer would be Both A and C are true.

The other two are the Mesozoic and Paleozoic Eras. The Cenozoic spans only about65 million years, from the end of the Cretaceous Period and the extinction of non-avian dinosaurs to the present. The Cenozoic is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time.

During the Mesozoic, or "Middle Life" Era, life diversified rapidly and giant reptiles, dinosaurs and other monstrous beasts roamed the Earth. The period, which spans from about 252 million yearsago to about 66 million years ago, was also known as the age of reptiles or the age of dinosaurs.

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