Question

Golden Age of Dinosaurs'/Age of reptiles was
A. Mesozoic
B. Cenozoic
C. Paleozoic
D. Psychozoic

Answer 1

The Mesozoic era is one of the three geological eras of the phanerozoic eon. This existed at a time of about 252 to 66 million years ago. This era was also phrased as the age of reptiles or the golden age of dinosaurs by paleontologist Gideon Mantell, as most dinosaurs evolved to become the most dominant and abundant species to roam the planet at any given time of the earth’s history.

Step by step answer: The word Mesozoic refers to middle life is a word derived from Greek literature. This era, preceded by the Paleozoic (ancient life) and succeeded by the Cenozoic (new life) constitutes the phanerozoic eon. Preceding the Mesozoic era, during the paleozoic era is when the earth experienced a boom of evolution and appearances of new fauna, such as arthropods, amphibians, mollusks, fish, etc.
After which, during the Mesozoic era, amphibians evolved rapidly and grew into the giant creatures. These amphibians are today known as dinosaurs, which dominated the landscape and were the most abundant species to roam the earth at any given geological period.
The Mesozoic era is divided into three epochs namely, Triassic, Jurrasic, and Cretaceous. During the Triassic era, the Pangea supercontinent began to break up and certain mammalian forms evolved.
During the Jurrasic, the dinosaurs had evolved and dominated both the oceans and the lands of the supercontinent. The climate was much more humid and most of the Pangea was tropical, where dinosaurs migrated to all known parts of the continent.
The Cretaceous epoch is when the earth started to cool and the poles had become much colder. Dinosaurs still evolved to survive climate change and evolved into avian and non-avian dinosaurs. But during this epoch around 66 million years ago it is assumed that a meteor hit the earth and wiped out 75% of all life on earth mainly non-avian dinosaurs and that was the end of the age of dinosaurs.
Therefore, the correct option is A.

Note: Mesozoic era belongs to one of three geological eras of the phanerozoic eon, preceded by the Paleozoic and succeeded by the Cenozoic era. It lasted about 252- 66 million years.
The Mesozoic era was known as the age of the dinosaurs, as during this period, amphibians/dinosaurs evolved rapidly and diversified into many species and dominated both the ocean and land. They migrated to all parts of the Pangea supercontinent and were the last of the giant creatures to walk this earth.