Nature finds a way.

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neverfail
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Nature finds a way.

Post by neverfail » Tue Jan 03, 2017 9:12 pm

Two totally unrelated species that evolved on widely separate continents yet still ended up with basically the same appearance and lifestyle to fill the same ecological niche.

North American flying squirrel.
https://en.wikipedia.org/wiki/Northern_flying_squirrel

Australian sugar glider.
https://en.wikipedia.org/wiki/Sugar_glider

Jim the Moron
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Re: Nature finds a way.

Post by Jim the Moron » Tue Jan 03, 2017 10:50 pm

Yep, neverfail, a neat example of convergent evolution. Here's another example -

North American flying beaver
http://crabshackgallery.com/images/BeaverRedux_2.jpg

Australian flying wombat
http://cliparts.co/cliparts/8cz/rGk/8czrGkyMi.jpg

neverfail
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Re: Nature finds a way.

Post by neverfail » Wed Jan 11, 2017 3:30 am

Not funny, Jim!

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lzzrdgrrl
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Re: Nature finds a way.

Post by lzzrdgrrl » Wed Jan 11, 2017 7:35 pm

Evolution takes a fork in the road. One problem, two approaches.....;>.......:

Image

Let's try this modelling exercise. Let's envision a world in a parallel universe somewhere let's say, where I'm right.........

neverfail
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Re: Nature finds a way.

Post by neverfail » Thu Jan 12, 2017 10:49 pm

Keep trying!

Jim the Moron
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Re: Nature finds a way.

Post by Jim the Moron » Fri Jan 13, 2017 7:08 am

neverfail wrote:Keep trying!
Punctuate this, neverfail.
http://www.pbs.org/wgbh/evolution/libra ... 35_01.html

There is solid scientific evidence that the sailcat species was created by "radiation from outer space," rather than from any semblance of phyletic gradualism.

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Milo
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Re: Nature finds a way.

Post by Milo » Fri Jan 13, 2017 12:59 pm

Jim the Moron wrote:
neverfail wrote:Keep trying!
Punctuate this, neverfail.
http://www.pbs.org/wgbh/evolution/libra ... 35_01.html

There is solid scientific evidence that the sailcat species was created by "radiation from outer space," rather than from any semblance of phyletic gradualism.
That's an interesting conclusion to draw from an article that mentions neither sailcat, nor radiation.

Jim the Moron
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Joined: Thu Dec 15, 2016 9:51 pm

Re: Nature finds a way.

Post by Jim the Moron » Fri Jan 13, 2017 7:38 pm

Yes, Milo - a common criticism of the paper by Eldredge and Gould was that it contained no references to sailcats, flying wombats, or radiation.

neverfail
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Re: American opussum versus the Aussie possum.

Post by neverfail » Sat Jan 14, 2017 7:16 pm

http://writingexplained.org/opossum-vs- ... difference

The American opossum is an aberrant species because it is the one and only marsupial on a continent where all other mammals are placental creatures. By contrast Australia has not a single native placental mammal - all but two of our hundreds of species are marsupials. The two that are not a monotremes.

What is a monotreme? It is a mammal that propagates its young by laying eggs and hatching them; like a bird or a reptile. Arguably, they represent the evolutionary missing link from the Earth's past prehistory between reptiles and modern mammals.

Jim the Moron
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Re: Nature finds a way.

Post by Jim the Moron » Sat Jan 14, 2017 10:46 pm

Informative, except that neverfail neglects to explain that "opussum" is American slang for a girl possum.

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