Dino Lock Screen Thema

Scary and amazing biggest Dinosaurs on this lock screen.

Dino Lock Screen Thema

Scary and amazing biggest Dinosaurs on this lock screen.

Dinosaurs are a diverse group of reptiles of the clade Dinosauria.

They first appeared during the Triassic period, between 243 and 233.23 million years ago,

although the exact origin and timing of the evolution of dinosaurs

is the subject of active research. They became the dominant terrestrial

vertebrates after the Triassic–Jurassic extinction event 201 million years ago,

their dominance continued through the Jurassic and Cretaceous periods.

Reverse genetic engineering and the fossil record both demonstrate

that birds are modern feathered dinosaurs,

having evolved from earlier theropods during the late Jurassic Period.

As such, birds were the only dinosaur lineage to survive

the Cretaceous–Paleogene extinction event 66 million years ago.

Dinosaurs can therefore be divided into avian dinosaurs, or birds,

and non-avian dinosaurs, which are all dinosaurs other than birds.

This article deals primarily with non-avian dinosaurs.

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