evolutionary evidence yet again makes the news
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15-09-2015, 07:08 PM
evolutionary evidence yet again makes the news
Cool shit. Truly.

http://www.businessinsider.com/afp-livin...ung-2015-9

"The coelacanth, an elusive deep-sea dweller long thought extinct, had another item added Tuesday to an already-long list of unusual physical traits: an obsolete lung lurking in its abdomen.

Similar to the human appendix, the organ was likely rendered defunct by evolution, researchers noted in the journal Nature Communications.

Like all fish, today's coelacanths -- referred to as "living fossils" -- use gills to extract oxygen from the water they live in.

But millions of years ago, coelacanth ancestors probably breathed using the lung, the team concluded.

"By the Mesozoic Era, adaptation of some coelacanths to deep marine water, an environment with very low variations of oxygen pressure, may have triggered the total loss of pulmonary respiration," co-author Paulo Brito of the Rio de Janeiro State University told AFP.

This could explain how it survived the extinction event 66 million years ago that wiped all non-avian dinosaurs and most other life from Earth -- and probably those coelacanths inhabiting shallow waters, he said.

It would also account for "the marked reduction" of the lung into its shrivelled, present-day form, Brito said by email.



- 'Lazarus' fish -



Coelacanth fossils have been dated to about 400 million years ago, and the fish was thought to have died out towards the end of the Mesozoic era, which stretched from about 250 to 66 million years ago.

But then one was caught off the South African coast in 1938, earning the coelacanth the title of "Lazarus taxon" -- a group of animals "resurrected" from extinction.

A few other individuals have been found since, as well as members of a cousin species off the coast of Indonesia, but the coelacanth is considered endangered.

It is a queer fish in many ways.

Key among its quirks, it has paired, "lobe-shaped" fins which move in an alternating pattern similar to a four-limbed land animal -- sparking speculation that it may have been a member of a group of fish that first crawled onto land to evolve into animals with legs.

The grey-brown fish can grow up to two metres (6.5 feet) in length, weigh as much as 91 kilos (200 pounds), and may live up to 60 years.

It has a hollow, liquid-filled spine, enamel-capped teeth, and a hinged jaw that allows it to open its mouth wide to swallow larger prey.

Little is known about how they live, what they eat, how they reproduce, or how many of them are left.

The new discovery was based on dissections and scans of infant and adult coelacanth samples, as well as 3D reconstructions, said Brito.

The team found that the disfunctional lung is proportionally much larger in the coelacanth embryo than the adult, meaning that growth of the organ slows as the fish gets older."

Love this stuff....no worries theists, nothing to see here Laugh out load

"Belief is so often the death of reason" - Qyburn, Game of Thrones

"The Christian community continues to exist because the conclusions of the critical study of the Bible are largely withheld from them." -Hans Conzelmann (1915-1989)
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15-09-2015, 07:13 PM
RE: evolutionary evidence yet again makes the news
Very cool. Thanks for that.

NOTE: Member, Tomasia uses this site to slander other individuals. He then later proclaims it a joke, but not in public.
I will call him a liar and a dog here and now.
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15-09-2015, 07:24 PM
RE: evolutionary evidence yet again makes the news
When I saw the thread title I thought this thing:
http://www.heritagedaily.com/2015/09/res...ime/108269

...which was cool and all but I wanted to see a video. Tongue

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15-09-2015, 07:37 PM
RE: evolutionary evidence yet again makes the news
(15-09-2015 07:24 PM)houseofcantor Wrote:  When I saw the thread title I thought this thing:
http://www.heritagedaily.com/2015/09/res...ime/108269

...which was cool and all but I wanted to see a video. Tongue


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15-09-2015, 07:47 PM
RE: evolutionary evidence yet again makes the news
(15-09-2015 07:37 PM)pablo Wrote:  Smartass

I just watched that doc last week. Wink

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16-09-2015, 05:20 AM
RE: evolutionary evidence yet again makes the news
Pff creationists know that's a swim faster sack, you scientists get it all wrong.

And these so called vestigial leg bones in Snakes/Whales are clearly penile bones. That's how you know they are sinful creatures.

"Allow there to be a spectrum in all that you see" - Neil Degrasse Tyson
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16-09-2015, 05:40 AM
RE: evolutionary evidence yet again makes the news
(15-09-2015 07:08 PM)goodwithoutgod Wrote:  ... was likely
... probably ... the team concluded.
... may have triggered
... This could explain ... and probably
... sparking speculation that it may have
... Little is known about
...
Love this stuff....no worries theists, nothing to see here Laugh out load

Edited for theist consumption.

Thumbsup

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16-09-2015, 05:45 AM
RE: evolutionary evidence yet again makes the news
Quote:The findings, which appeared online Aug. 19 in the Proceedings of the Royal Society B, show how real time evolution can be resolved into differences among fathers in siring sons, which could be attributed to how successful the father is in finding mates or how long he lives. It also shows how evolution can link these differences to heritable individual attributes.

“People think of evolution as historical. They don’t think of it as something that’s happening under our nose. It is a contemporary process. People are skeptical; they don’t believe in evolution because they can’t see it. Here, we see it. We can see if something makes you better able to make babies and live longer,” Reznick said.

From my link above; the kind of video I was thinking of. Probably should've mentioned that when posting, but Gwynnies. Hobo

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16-09-2015, 07:47 AM
RE: evolutionary evidence yet again makes the news
And!

Evolution caught red-handed.

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16-09-2015, 02:21 PM
RE: evolutionary evidence yet again makes the news
(16-09-2015 05:40 AM)DLJ Wrote:  
(15-09-2015 07:08 PM)goodwithoutgod Wrote:  ... was likely
... probably ... the team concluded.
... may have triggered
... This could explain ... and probably
... sparking speculation that it may have
... Little is known about
...
Love this stuff....no worries theists, nothing to see here Laugh out load

Edited for theist consumption.

Thumbsup

You know I saw the same triggers...I always try to read info as if I was a creationist, what would I see...what would the angle of my attack be to discredit the info...how would I undermine or debunk the evidence. This tactic has served me well before as I try not to present information that isn't valid, substantiated and easy to defend. There is so much solid info out there, to present anything wishy-washy just undermines the effort, as any tiny perceived victory on their part is trumpeted as a debunking of all. Which is why when some of our members point out something I say as not current, or not as solid as I thought or presented, I verify then quickly strike it from my repertoire....and you are correct, those key words are sticks of vagueness which fuel a fire if ceased upon by the astute. Thumbsup

"Belief is so often the death of reason" - Qyburn, Game of Thrones

"The Christian community continues to exist because the conclusions of the critical study of the Bible are largely withheld from them." -Hans Conzelmann (1915-1989)
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