In which era were the reptiles dominant?

At what time did the dinosaurs become extinct from the Earth (in $mya$)?

In a bush pattern of evolution,the uppermost tips of the branches represent

Identify the organism based on the following characteristics:
- They were land reptiles.
- They had huge, fearsome, dagger-like teeth.

Which of the following were abundant in the $Mesozoic$ era?

Which era is known as the age of birds and mammals?