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Precambrian
How many years ago did the Precambrian era begin?
Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emer...
What animals were there in the Precambrian era?
The fossil record of multi-celled animals from the Precambrian includes three main groups that have persisted to the present day. These include the sp...
How do you describe the precambrian era?
The Precambrian is the earliest of the geologic ages, which are marked by different layers of sedimentary rock. Laid down over millions of years, thes...
Approximately how many years ago did Precambrian era begin?
Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emer...
When did the preCambrian time begin and end?
Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emer...
What animals lived in Precambrian time?
The fossil record of multi-celled animals from the Precambrian includes three main groups that have persisted to the present day. These include the sp...
Why is there no samples of rocks from the early PreCambrian era?
Why are so few Precambrian rocks exposed on Earth's surface?Why are fossils rarely found in Precambrian rock?Where can we find Precambrian rocks?What...
What is percanbrian?
What is the Precambrian era known for?What is considered Precambrian?What does Precambrian time mean in science?What do stromatolites mean?What does ...
How did the precambrian animal change?
What animals evolved during Precambrian era?What changes happened in the Precambrian era?Were there land animals in the Precambrian era?What were ani...