The fish-like giant reptile which existed $200$ mya was
Pteranodon
Ichthyosaur
Triceratops
Tyrannosaurus
The flowering plants originated in which of the following periods?
Cretaceous period of the Mesozoic era is characterised by which of the following?
Which phenomena confined the pouched mammals of Australia survived because of lack of competition from any other mammals?
Which of the following arrangement of periods of the mesozoic era gives a correct sequence from the earliest to the latest?