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Over four billion (4,000,000,000) years. A famous illustration puts it this way: if we think of the Earth's existence as one calendar year, beginning on 1 January, the dinosaurs were here just in time for Christmas. (And People? We show up just four seconds before midnight, 31 December.)
What else can I help you with?
Were rocks that are 3.5 billion years present when earth was first formed?
No, rocks that are 3.5 billion years were not present when earth was first formed. Earth formed about 4.6 billion years ago.
When did the first asteroid hit the earth?
There is no way of knowing as in might of fallen in the dinosaur age and it was not recorded
What year did birds appear on earth?
they were first noticed millions of years ago during the dinosaur time
First dinosaur on earth?
According to the latest scientific studies, the first dinosaurs appeared on the earth about 230 million years ago. Zupaysaurus was one of the original theropods.
Who was the first to kill a dinosaur?
Dinosaurs roamed the earth and died out millions of years before humans came on the scene.
Is the mantle the evidence of how earth look like when it was first formed 4 billions years ago?
The mantle is not the evidence of how earth looked like when it was first formed 4 billions years ago, but the biogenic graphites.
How many years ago was the first marine plant formed on the earth?
90 years ago
When did ice first form on earth?
Ice first formed on Earth around 2.4 billion years ago during the Huronian glaciation period. This was the planet's first known snowball Earth event where the entire surface was believed to be frozen.
How many years were dinosaur on earth?
1day and we came after the planet of the apes
Did earth first oceans form?
It was about 4 billion years ago, that the Earths oceans formed
When was the earth first formed?
The Earth is estimated to have formed around 4.5 billion years ago, based on evidence from radiometric dating of meteorites and rocks. This age is determined by analyzing the oldest known rocks on Earth and dating the composition of meteorites.
What era was earth first formed Cenozoic Mesozoic Paleozoic or Precambrian PLEASE HELP?
The earth first formed at the beginning of the Precambrian supereon which spans a very large period of time from 4,567 million years ago, through to 542 million years ago.The beginning of the Precambrian where Earth formed is known as the Hadean eon, stretching from 4.7 Ga (billion years ago) and ended roughly 3.8 billion years ago.
