From the following options, identify the ascending order of eras in the geological time scale for a hypothetical vertebrate evolution?
From the following options, identify the ascending order of eras in the geological time scale for a hypothetical vertebrate evolution?
The correct option is D Paleozoic, Mesozoic, Cenozoic
The geological time scale is the representation of the duration of the eras and periods with their dominant forms of life in the history of the Earth.
The correct chronological order of the various eras is Paleozoic → Mesozoic → Cenozoic, so option d is correct.
Each era is again divided into periods.
The correct chronological order of various periods of the Paleozoic era is Silurian →Devonian →Carboniferous →Permian.
Invertebrates (non-chordates) were formed 500 million years ago (mya).
Chordates evolved from the non-chordates during the Paleozoic era.
The chordates in which the notochord is replaced by the vertebral column are called vertebrates. Vertebrates include fishes, amphibians, reptiles, Aves and mammals.
Jawless fishes (vertebrates) probably evolved around 350 mya. The Devonian period is considered as the age of fishes.
From the lobe-finned fishes, the first amphibians evolved during the Devonian period. Carboniferous period is generally considered as the age of amphibians.
The first reptiles appeared during the Carboniferous period of the Paleozoic era and further diversified during the Mesozoic era. The Mesozoic era is considered the age of reptiles.
The Mesozoic era has various periods like the Triassic, Jurassic and Cretaceous in the chronological order.
Both the Aves and mammals evolved from the reptiles. The evolution of the first mammals and birds occurred during the Triassic period and Jurassic periods respectively.
Mammals flourished during the Cenozoic era, which is called the age of mammals.
The geological time scale is the representation of the duration of the eras and periods with their dominant forms of life in the history of the Earth.
The correct chronological order of the various eras is Paleozoic → Mesozoic → Cenozoic, so option d is correct.
Each era is again divided into periods.
The correct chronological order of various periods of the Paleozoic era is Silurian →Devonian →Carboniferous →Permian.
Invertebrates (non-chordates) were formed 500 million years ago (mya).
Chordates evolved from the non-chordates during the Paleozoic era.
The chordates in which the notochord is replaced by the vertebral column are called vertebrates. Vertebrates include fishes, amphibians, reptiles, Aves and mammals.
Jawless fishes (vertebrates) probably evolved around 350 mya. The Devonian period is considered as the age of fishes.
From the lobe-finned fishes, the first amphibians evolved during the Devonian period. Carboniferous period is generally considered as the age of amphibians.
The first reptiles appeared during the Carboniferous period of the Paleozoic era and further diversified during the Mesozoic era. The Mesozoic era is considered the age of reptiles.
The Mesozoic era has various periods like the Triassic, Jurassic and Cretaceous in the chronological order.
Both the Aves and mammals evolved from the reptiles. The evolution of the first mammals and birds occurred during the Triassic period and Jurassic periods respectively.
Mammals flourished during the Cenozoic era, which is called the age of mammals.
