Which era is called the age of angiosperms?

Give the name of the first organism who invaded land

Seed ferns originated in

The animal called …….. evolved into the first amphibians that lived on both land and water.

Complete the given statement by choosing an appropriate option

$A$ : Tyrannosaurus rex had fearsome dagger like teeth.
$R$ : Tyrannosaurus was largest dinosaur depending upon herbs and shrubs.