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The most famous of course is the extinction of the Dinosaurs 65 million years ago in the Cretaceous - Tertiary period.
Prior to that there was the Triassic - Jurassicextinction about 205 million years ago. Although this is a disputed impact extinction, it is still one of the theories.
The most devastating was the Permian - Triassicextinction 250 million years ago in which 96% of all marine species and 70% of all land species were killed including insects. This extinction event is believed to be a series of small extinctions over time or 2 large extinctions , there are several theories from climate change to impact.
The further back you go the harder it is to estimate extinctions because of the lack of fossil records but two more that are listed are.
The late Devonian extinction 360-375 million years ago, again a disputed impact event, but a comet or meteor is among the favoured.
And Ordovician - Silurian extinction 440-450 million years ago.
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When geologists refer to the big five' what are the referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
Mass extinctions are usually followed by what?
When there are mass extinctions they are usually followed by adaptive radiation and very rapid diversification. The last mass extinctions happened 65 million years ago.
What are comets and meteors made of?
Comets and meteors are made of rocks and boulders same as on earth. But since they are in space for a long time, they might have some differences, little differences.
What is a group of meteors?
It is a shower of meteors.
Does Neptune have any meteors?
All planets will experience some meteor hits.
How is it affect to earth's environment when meteor hit the earth?
That depends on the size of the meteor, and also the impact speed, which may vary. Smaller meteors hit the Earth every day. Larger ones can cause mass extinctions. For example, it is believed that the mass extinction 65 years ago, which basically eliminated the dinosaurs, was due to a large meteor.That depends on the size of the meteor, and also the impact speed, which may vary. Smaller meteors hit the Earth every day. Larger ones can cause mass extinctions. For example, it is believed that the mass extinction 65 years ago, which basically eliminated the dinosaurs, was due to a large meteor.That depends on the size of the meteor, and also the impact speed, which may vary. Smaller meteors hit the Earth every day. Larger ones can cause mass extinctions. For example, it is believed that the mass extinction 65 years ago, which basically eliminated the dinosaurs, was due to a large meteor.That depends on the size of the meteor, and also the impact speed, which may vary. Smaller meteors hit the Earth every day. Larger ones can cause mass extinctions. For example, it is believed that the mass extinction 65 years ago, which basically eliminated the dinosaurs, was due to a large meteor.
When geologists refer to the Big Five what are they referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
When geologist refer to the big five what are they referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
When geologists refer to the big five' what are the referring to?
When geologist refer to the Big Five they are referring to the five mass extinctions on Earth. Some of these extinctions are the Paleozoic and Mesozoic eras.
What is the animal group with the most extinctions?
invertabates are the animals with the most extinctions
Does the atmosphere protect us from meteors?
It does to some extent. Rocky meteors typically burn up as they pass through our thick atmosphere. Nickel-iron meteors can burn up, but usually have the mass to punch through to some degree.
What are some extinctions other than dinosaurs?
dodos, elephant birds, passenger pigeons
Name some birds that survived mass extinctions.?
If they went extinct they wouldn't survive
What was the outcomes of each of the mass extinctions?
The outcomes of each of the mass extinctions is that animal and/or bacteria die.
Do scientists believe that extinctions are uncommon?
No, they are fundamental to the process of evolution. Mass extinctions are less common.
Meteors shape of orbit?
Meteors typically have elliptical orbits, similar to comets. Their shape of orbit can vary depending on their origin and the gravitational forces they encounter in the solar system. Some meteors follow stable orbits, while others may have more inclined or eccentric paths.
Do extinctions happen frequently?
No
