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According to some estimates, at least several hundred million. Discovery Channel (How many species have actually gone extinct?) says the estimates are between 1 and 4 billion.
This would include the Ediacaran extinctions, which occurred during the Cambrian shift (500 million years ago) to lifeforms that live on the land rather than in the sea.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoThe exact number of species is unknown, since it depends on when you begin counting from. Extinction has happened since the dawn of life, depending on the enviroment only the most adapted survived so who knows how many animals went extinct? While we have found fossilized remains of many animals dating back to long ago, not all life forms got preserved and thus we will never know.
Wiki User
∙ 14y agoIt is assumed that 99% of all species that have ever existed have gone extinct.
Wiki User
∙ 6y ago99 out of every 100
Wiki User
∙ 14y ago27
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Are any Fungi extinct?
Yes of course many species of Fungi have gone extinct, as have many species of Plants, Animals, etc.
How many known animals have gone extinct?
Many species of tigers
How could animals be extinct?
Animals are extinct when there's no known animals part of the species still alive.Or, if you're asking how they become extinct, that can be because of many causes.
How many species of animals become extinct every day in the Amazon?
35,150 animals become extinct every year.
What called when Due to depletion of forests many species of animals and plants are getting extinct?
The statement says that many species of animals are plants are becoming extinct, due to depletion of forests, which serves as habitats and protection for the animals.
How many species of animals become extinct?
99 out of every 100
How many animals extinct per year?
five or six species...
How many species of plants and animals become extinct everyday as their habitate and human influences destroy them?
how many species of plants and animals become extinct every day as their habitat and human influences destroy them
What is the difference between endangered and extinct animals?
Endangered Species are ones that have a very small population and that population is at a greater risk of becoming extinct. Many species that become extinct never make to the endangered species list. Extinct Species are ones that are either known (documented) to be extinct or are so few in population that a recovery is considered highly unlikely even under excellent conditions.
How many animals are excinct?
It is hard to determine exactly how many animal species are extinct because some species become extinct before scientists even know they existed. As far as science can tell, there are over 900 extinct species.
How many species of animals have there ever been?
there have been too many to count, like animals that were extinct before we were here
Around how many animals have gone extinct?
Extinction of animals (or rather species) happens all the time and has been going on for hundreds of millions of years. All the fossils we find in the rocks are species that are now extinct. It is therefore impossible to tell you just how many animals have gone extinct. However, you question may have been prompted by concerns for our planet and its ecosystem today and you may therefore be asking How many animals have gone extinct because of man's activities? This a good question, unfortunately I don't know the answer to this so I will ask it. (The answer is in the related question below)
