Identify the dinosaur shown in the figure.

The $Mesozoic$ era is also known as the:

$A$: $Lycaenops$ is a connecting link between reptiles and mammals.
$R$: In the $Permian$ period,there was an origin of mammal-like reptiles.

The present concept of evolution is known as

Assertion: Leaf butterfly and stick insect show mimicry to dodge their enemies.
Reason: Mimicry is a method to acquire body colour blending with the surroundings.

Neoteny is found in