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When some animals go extinct, Nature doesn't simply clear the stage and bring out completely new ones. Mammals existed side by side with the dinosaurs; they just weren't as large or varied. Birds appeared before the dinosaurs died out (Some people say birds ARE dinosaurs, greatly modified).
Wiki User
∙ 10y ago
Wiki User
∙ 10y agoIt's hard to say what were the very first organisms, because they would have been soft-bodied and very tiny and wouldn't have left mineralized fossils. However, the earliest evidence of organisms is that of the "blue-green algae," also known as cyanobacteria. They were far more before the dinosaurs than the dinosaurs were before us.
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Members of which domain were thought to be some of the first organisms on earth billions of years before the dinosaurs?
Archaebacteria
Members of which domain were thought to be some of the first organisms on earth billions of years before dinosaurs?
Archaebacteria
What type of organisms dominated the earth for more than the first half of the history of life on earth?
Dinosaurs were the one who dominated the earth
Who was the first to inhabit the earth noah or dinosaurs?
Dinosaurs lived and died out about 65 million years before humans walked the Earth.
Who was here first Jesus or dinosaurs?
Dinosaurs appeared on the earth before Jesus according to the present evidence.
Were dinosaurs or birds the first beings?
Dinosaurs came before birds, because dinosaurs later on evolved into birds, therefore, making birds come along LATER then the dinosaurs. However dinosaurs were far from the first creatures on earth.
Dinosaurs first appeared in what period?
Dinosaurs first appeared in the tertiary stages of the Earth. Tertiary was when the dinosaurs ruled the earth. Then there was jurassic and then creteacious
Did sharks appear when dinosaur extinct?
No. Sharks appeared on earth long before the first dinosaurs did.
Who inhabited the earth first human or dinosaur?
Dinosaurs inhabited the Earth before humans. Dinosaurs lived during the Mesozoic Era, which spanned from about 252 million years ago to about 66 million years ago. The first humans, as we know them today, evolved much later, around 300,000 years ago.
Did Cave men ride dinosoaurs?
No, cave men did not ride dinosaurs. Dinosaurs went extinct millions of years before the first humans appeared on Earth.
Who was the first to kill a dinosaur?
Dinosaurs roamed the earth and died out millions of years before humans came on the scene.
Have sharks been on the earth before dinosaurs?
No, but sharks were there at the time of dinosaurs but at the end of the Mesozoic Era. Eras: Cenozoic Era ( Present-day) Mesozoic Era (dinosaur time) Paleozoic Era (blast of organisms (more complex)) Precambrian Era (4.6 billion years ago, simple organisms form)
