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First major extinction (c. 440 mya): Climate change (relatively severe
and sudden global cooling) seems to have been at work at the first of
these-the end-Ordovician mass extinction that caused such pronounced
change in marine life (little or no life existed on land at that time). 25%
of families lost (a family may consist of a few to thousands of species).
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The largest extinction the world has ever known occurred at the end of which period?
The largest extinction event known is the Permian-Triassic Extinction Event, 250 million years ago. It is nicknamed "The Great Dying" in reference to how 96% of all known marine animals and 70% of all known terrestrial vertebrates at the time went extinct due to climatic changes because of volcanic eruptions and the formation of Pangaea.
When was the first mass extinction?
540 million years ago was the first mass extinction
When did organisms suffer the largest mass extinction known?
The most devastating mass extinction occurred in the Late Permian (~250 million years ago).
Explain te catastrophic event most likely ended the Mesozoic era?
The Cretaceous- Tertiary Extinction
The three major categories of evidence provided by the fossil record are?
Catastrophe, stasis, and extinction.
What are the extinction of animals in the very distant past?
There were five major extinction events in the past. They are called the Cretaceous-Tertiary (or K-T) extinction event, the late Devonian mass extinction, the Permian mass extinction, the Ordovician-Silurian mass extinction and the Triassic-Jurassic mass extinction event.
What is the a period of time called when many species disappeared?
A major extinction event.
What was the second major extinction event?
i dont know y u askin me ;D
What is the name of the major extinction that preceded the Mesozoic era?
The Permian-Triassic extinction event. Also known as the P-Tr extinction or the Great Dying, where 96% of all life died out.
What was the major event of the Jurassic Period?
i heard that it was the exsistance and extinction of the dinosours and the continuing breakup of Pangaea
What happened at the end of both the mesozoic and palezoic eras?
There were major asteroid impacts. #fuckschool #imheretohelp
What survived the extinction event of the dinosaurs-?
Avian dinosaurs survived the extinction event of the dinosaurs.
What evidence supports the idea that extinction is a natural event?
the idea that extinction evedince is a natural event
How do I use Permian Extinction in a sentence?
No, child, I was not a witness to the Permian Extinction. The Permian extinction event is the only known mass extinction of insects. The Permian extinction event occurred about 252 million years ago.
What is a very sudden elimination of a species from a catastrophic event?
I think it's extinction. ------------------------------- More specifically an "extinction event".
What is the extinction level event of Yellowstone caldera?
An eruption of the Yellowstone caldera occurs it will likely be an extinction level event.
Is the Devonian time before or after the mass extinction?
Which mass extinction? There have been five such events. The first one, the Ordovician-Silurian extinction event occurred before the Devonian. The Late Devonian event occurred during the Devonian. All other mass extinctions occurred after the Devonian.
