Arrange the given groups of animals in correct evolutionary sequence.
A. Dinosaurs
B. Therapsids
C. Thecodonts
D. Pelycosaurs
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → D, C, B, A
D. Pelycosaurs — first. They were early synapsid reptiles of the Carboniferous and Permian periods, the oldest of the four groups.
C. Thecodonts — second. These reptiles appear around the Permian and Triassic periods. The dinosaurs later arose from this line.
B. Therapsids — third. These mammal-like reptiles appear in the Triassic period. The mammals evolved from this line.
A. Dinosaurs — last. They ruled the land in the Jurassic and Cretaceous periods and then died out.
In the chart below, the groups appear from the bottom (older) to the top (newer) in this order.
NCERT Extract:
