Total number of species that have existed on Earth

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Offline tweener

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Does anyone have an estimate of the total number of species that have existed on the earth, including those that are extinct?

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« Last Edit: 30/06/2004 08:59:05 by Exodus »
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Offline OldMan

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Re: Total number of species that have existed on Earth
« Reply #1 on: 09/06/2004 04:01:16 »
I started trying to count but ran out of fingers and toes quickly

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Offline Kryptid

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Re: Total number of species that have existed on Earth
« Reply #2 on: 09/06/2004 05:32:54 »
I once read that there are over 1 million known animal species and over 300,000 plant species. I don't know if that includes extinct creatures or not. I don't know how many species of protists or monerans there are. I would wager that there have been over 10 million species on this planet.
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Offline Exodus

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Re: Total number of species that have existed on Earth
« Reply #3 on: 09/06/2004 17:01:19 »
quote:
Originally posted by tweener

Does anyone have an estimate of the total number of species that have existed on the earth, including those that are extinct?

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John - The Eternal Pessimist.



good luck on that one! lol!

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Offline OmnipotentOne

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Re: Total number of species that have existed on Earth
« Reply #4 on: 09/06/2004 21:15:21 »
The only thing i know on that topic is that that majority of all species live in the water.



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Offline qpan

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Re: Total number of species that have existed on Earth
« Reply #5 on: 10/06/2004 02:34:17 »
Are you sure about only 10 million species? Insects currently on this planet make up 4-6 million species!

And remember - in terms of mass, there is more bacteria on this planet than the mass of all the humans put together- so i'd be willing to bet that there are a lot more than 10 million species - as bacteria make up another 6+ million species! I'd say about 15 million species which are on this planet now, and many more millions beofre us humans even arrived on this here blue planet!

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Offline qpan

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Re: Total number of species that have existed on Earth
« Reply #6 on: 10/06/2004 02:35:47 »
quote:
Originally posted by OmnipotentOne

The only thing i know on that topic is that that majority of all species live in the water.



I love critisism!



I dunno- apparently, there are "only" two million species of bacteria in water, whereas there are an estimated 4 million species in ur average tonne of garden soil!

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Offline OmnipotentOne

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Re: Total number of species that have existed on Earth
« Reply #7 on: 11/06/2004 03:55:37 »
Hmm i forgot about that little known thing called basteria.  If theres that many in the dirt, then I must be devouring millions when i go to Mcdonalds!



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To see a world in a grain of sand.

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Offline neilep

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Re: Total number of species that have existed on Earth
« Reply #8 on: 11/06/2004 22:43:33 »
Me reckons there's a bunch of species living in my gut, my intestine, my mouth....my everything.........at least I'm not alone :-)

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