Question

Which of the following geological ages is called the golden age of reptiles?
A. Archaeozoic
B. Mesozoic
C. Palaeozoic
D. Cenozoic

Answer 1

Hint: The golden age of reptile came after the end of the Permian period. The golden age of reptiles started about 252 million years ago and ended about 66 million years ago.

Complete answer: The geological age involves the division of geological time i.e. Eon into an era, period and epoch. Precambrian, Palaeozoic, Mesozoic and Cenozoic are 4 types of the era’s from oldest to youngest. The Jurassic period of the Mesozoic era is called the “Golden age of reptiles”. During the Jurassic period, Dinosaurs dominated the earth. Moreover, in the Mesozoic era, the earth was ruled by reptilian creatures. The time period of archaeozoic was from 3,800 million years to 2,500 million years ago. During this time, unicellular organisms were the first to form and along with the earth’s crust. There was the presence of great diversity of marine invertebrates in the Palaeozoic era. Cambrian, Silurian, Ordovician, Carboniferous, Permian and Devonian are six periods of the palaeozoic era. The name of these periods is derived from rocks from which they were discovered. Humans live in the Cenozoic era of the Holocene epoch.
Hence, the correct answer is option B.

Note: In the Devonian period of palaeozoic era, fishes were dominant in the aquatic environment, so called as the golden age of fishes. The Cenozoic era is known as the age of mammals as dinosaurs become extinct which lead to diversification of mammals, marked by global cooling.