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Dinosaurs emerged first. Some dinosaurs were birds, but they didn't come until later.

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Which came first fish or amphibians or reptiles?

Fish, and then amphibians, and then reptiles, and then mammals


Which came first invertebrates or vertebrates?

Vertebrates came first... all of those other creatures are vertebrates.. prior to the evolution of the spine (vertebrae) there were no fish, reptiles, mammals birds... nothing like them..


Are birds and mammals decended from a common ancestor?

Mammals came before birds. The first mammals lived in the Triassic and the first birds lived in the Jurassic.


Who has lived longer on earth so far dinosaurs or mammals?

Mammals and dinosaurs started about the same time and mammals are still here, so ... Mammals! (Unless you count birds as dinosaurs, in which case it's a tie). One of the mysteries of evolution is why the dinosaurs came to dominate the mammals in the first place.


What came before the fish amphibians reptiles and dinosaurs?

Fish, reptiles, and amphibians, originated in that order during the Paleozoic era.


Who came first hen or egg?

eggIf Egg came first .... then how egg was produced without Hen?Some people believe that birds are descendants of the dinosaurs... So, the dinosaur came first!actually the answer Is Egg Of Fish!But How and what is Its Relation To hen And Egg's Of Hen ?If we Look at the very Long time ago, the first cells began to exist from oceansSo Oceans are probebly where the live has began and the first animates.Fish is One of thoes First Animate that start to exist about 500 million years ago and by pasing time they changed according to their environment and the amphibias apeard on plant 370 million years ago ( 130 years after fishes )these Changes had happend for all animates during timethe Amphibians changed and reptiles apeard 20 million years after them and their descendants produced Birds and Mammalsthe First cells >> Fishes >> Amphibians >>reptiles >>( Birds & Mammals )


Are archeopteryx the ancestors of bats?

No mammals didn't decend from the dinosaurs, birds did. Bats came from common rodent ancestors.


When did the first dinosaurs and mammals evolve?

The first dinosaurs AND the first mammals both appeared in the Triassic period From the Mesozoic era.


What came first a bee or a horse?

The bee came first, insects were around long before mammals or even dinosaurs.


Which came first insects or amphibians?

Insects came first, appearing on Earth around 400 million years ago during the Devonian period. Amphibians evolved later, approximately 370 million years ago, from lobe-finned fish that adapted to life on land. Therefore, insects predate amphibians by about 30 million years.


What animals came after amphibians?

reptiles


Which creatures came next on earth after fish?

After fish, amphibians were the next group of creatures to evolve on Earth. Amphibians are cold-blooded vertebrates that can live both on land and in water. They were the first vertebrates to colonize terrestrial habitats.