The mesozoic era of earth is called

In geology texts, the mesozoic era, which began some 250 million years ago, is usually called the "Age of Reptiles". It is divided into three periods, the Triassic, Jurassic and Cretaceous. In the typical description, encountered in texts on geology, paleontology and evolutionary biology, it is "the era during which reptiles dominated life on earth until their extinction at the end of the Cretaceous Period, 65 million years ago". The idea that reptiles "ruled" the mesozoic dates back to Cuvier, who in the early nineteenth century asserted there had once been a time, when reptiles were dominant. It also comes from the popular misconception, that dinosaurs were all large. Thus, option D is correct. The mesozoic era of earth is not called the  age of amphibians, age of armoured fish and age of primitive man.