Jurassic period of the Mesozoic era characterized by
Gymnosperms are dominant plants and first birds appear
The Jurassic period was characterised by the origin of the first birds and gymnosperms were the dominant plants at the time.
Radiation of reptiles and origin of mammal-like reptiles occurred in the Permian period of the Carboniferous era.
Dinosaurs went extinct about 65 million years ago at the end of the Cretaceous Period.
First dinosaurs and flowering plants/angiosperms appeared in the Triassic period of the Mesozoic era.