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The first dinosaurs AND the first mammals both appeared in the Triassic period From the Mesozoic era.
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∙ 15y ago
Wiki User
∙ 11y agoYes they did. They appeared about 10 million years before the first mammals.
Wiki User
∙ 13y agoYes. There were even primitive monkeys 80 million years ago in Africa.
Mammals existed from the Triassic onwards.
Wiki User
∙ 13y agoThe first dinosaurs came about 230 million years ago, during the Middle to Late Triassic time period. The mammals came about 200 million years ago during the early Jurassic time period.
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∙ 11y agoNo. Mammals evolved shortly after dinosaurs did from a separate group of animals. The modern descendants of dinosaurs are birds.
Wiki User
∙ 9y agoDinosaurs are older, by several million years.
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Did mammals evolve from dinosaurs?
No. Mammals evolved from synapsid reptiles, a group not closely related to dinosaurs. Dinosaurs are more closely related to modern reptiles and birds than they are to mammals.
Who appeared in fossils first dinosaurs or mammals?
Dinosaurs first appeared shortly before mammals did.
Why have dinosaurs not changes since before the time of dinosaurs?
Dinosaurs are extinct, buddy. I don't know what planet you live on, but they've been gone for a long time. And they did evolve, they turned into birds and mammals. Robert, they likely did not evolve into mammals, the mammals were already there. Although, I will give you credit on birds, due to the Archaeopteryx.
Where elephants here before dinosaurs?
Mammals did not evolve until dinosaurs were prolific when they did appear they were very small and very scarce when dinosaurs died out.
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.
Were there other mammals with dinosaurs?
There were mammals living alongside the dinosaurs, but the dinosaurs were not mammals.
When did the piranha first evolve?
in the dinosaurs epoch
If humans evolved from the sea where did the dinosaurs evolve from?
Humans evolved from mammals like dinosaurs such as dimetrodon. All Vertebrate's evolved from the sea, Dinosaurs and Humans alike (the first were neither Reptiles nor Mammals but Tetrapods). These Tetrapods were the first to make the move from ocean to land: At the time of the Dinosaurs the only Mammals were tiny mouse like creatures unable to increase in size and complexity due to the domination of the Dinosaurs - that small size helped the early mammals to survive underground whilst the Dinos perished during the extinction event. And the rest, is history!
Are woolly mammoths older or younger than dinosaurs?
No. The first mammals appeared shortly after the first dinosaurs.
Which are older mammals or birds?
Mammals are older. The first mammals evolved around 220 million years ago, not long after the first dinosaurs. Birds evolved from small carnivorous dinosaurs about 160 million years ago.
Did mammals or reptiles develop first?
reptiles because of the dinosaurs
Did mammals appear in the fossil record before dinosaurs or after?
Mammals actually first came into existence about 220 million years ago, which is about 155 million years before the dinosaurs went extinct, and only about 10 million years after they themselves first evolved. So mammals actually lived alongside the dinosaurs, though played a much smaller role.
