<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"
	xmlns:content="http://purl.org/rss/1.0/modules/content/"
	xmlns:dc="http://purl.org/dc/elements/1.1/"
	xmlns:atom="http://www.w3.org/2005/Atom"
	xmlns:sy="http://purl.org/rss/1.0/modules/syndication/"
		>
<channel>
	<title>Comments on: Four-Winged Dino Clinches the Case for Bird Evolution</title>
	<atom:link href="http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/</link>
	<description>80beats is DISCOVER&#039;s news aggregator, weaving together the choicest tidbits from the best articles covering the day\&#039;s most compelling topics.</description>
	<lastBuildDate>Tue, 24 Nov 2009 07:32:38 -0600</lastBuildDate>
	<generator>http://wordpress.org/?v=2.8.4</generator>
	<sy:updatePeriod>hourly</sy:updatePeriod>
	<sy:updateFrequency>1</sy:updateFrequency>
		<item>
		<title>By: Birdzilla</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-64640</link>
		<dc:creator>Birdzilla</dc:creator>
		<pubDate>Tue, 03 Nov 2009 05:00:44 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-64640</guid>
		<description>Still trying to prove this silly evolution bull kaka trying to prove this nonsense that all the birds evolved from dinasours WHAT POPPYCOCK</description>
		<content:encoded><![CDATA[<p>Still trying to prove this silly evolution bull kaka trying to prove this nonsense that all the birds evolved from dinasours WHAT POPPYCOCK</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Carl</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-57351</link>
		<dc:creator>Carl</dc:creator>
		<pubDate>Mon, 12 Oct 2009 08:49:28 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-57351</guid>
		<description>Wow, Arv, I see that you had a big bowl of crazy for breakfast, and apparently went back for seconds.</description>
		<content:encoded><![CDATA[<p>Wow, Arv, I see that you had a big bowl of crazy for breakfast, and apparently went back for seconds.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: cleon dann</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-57315</link>
		<dc:creator>cleon dann</dc:creator>
		<pubDate>Mon, 12 Oct 2009 06:38:22 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-57315</guid>
		<description>i know that... i think it is an older post... i love to collect information about dinosaurs... and mammals... I also like extra terrestrial things  and also want to know about universe...

regards
cleon dann</description>
		<content:encoded><![CDATA[<p>i know that&#8230; i think it is an older post&#8230; i love to collect information about dinosaurs&#8230; and mammals&#8230; I also like extra terrestrial things  and also want to know about universe&#8230;</p>
<p>regards<br />
cleon dann</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Arv Edgeworth</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-56456</link>
		<dc:creator>Arv Edgeworth</dc:creator>
		<pubDate>Fri, 09 Oct 2009 15:14:17 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-56456</guid>
		<description>For those of you that still believe dinosaurs turned into birds, did you know the word &quot;gullible&quot; isn&#039;t in the dictionary?

Have any of you ever considered the thought that maybe some dinosaurs could fly, and some birds can&#039;t? A flying dinosaur wouldn&#039;t prove they turned into a bird kind, which is very different. I just wonder why you are so determined that they have to. Couldn&#039;t be because of your philosophical worldview could it?

You have probably also accepted the nonsense that the whale has hind limb bones that are vestigial and serve no function, that were left over from when they had four legs and walked on land. You do know don&#039;t you that those bones are organ anchors and they can&#039;t reproduce without them? They are not connected to the vertibral column with no evidence they ever were. The drawings of the so-called whale evolution were from a few bones and an artist&#039;s reconstruction of what they may have looked like.

Change &quot;Once upon a time, long ago and far away,&quot; to &quot;millions of years ago,&quot; and suddenly it becomes believable. You need to rename this. Call it: &quot;From the Goo to You, By Way of the Zoo.&quot;</description>
		<content:encoded><![CDATA[<p>For those of you that still believe dinosaurs turned into birds, did you know the word &#8220;gullible&#8221; isn&#8217;t in the dictionary?</p>
<p>Have any of you ever considered the thought that maybe some dinosaurs could fly, and some birds can&#8217;t? A flying dinosaur wouldn&#8217;t prove they turned into a bird kind, which is very different. I just wonder why you are so determined that they have to. Couldn&#8217;t be because of your philosophical worldview could it?</p>
<p>You have probably also accepted the nonsense that the whale has hind limb bones that are vestigial and serve no function, that were left over from when they had four legs and walked on land. You do know don&#8217;t you that those bones are organ anchors and they can&#8217;t reproduce without them? They are not connected to the vertibral column with no evidence they ever were. The drawings of the so-called whale evolution were from a few bones and an artist&#8217;s reconstruction of what they may have looked like.</p>
<p>Change &#8220;Once upon a time, long ago and far away,&#8221; to &#8220;millions of years ago,&#8221; and suddenly it becomes believable. You need to rename this. Call it: &#8220;From the Goo to You, By Way of the Zoo.&#8221;</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: dave howard</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-54017</link>
		<dc:creator>dave howard</dc:creator>
		<pubDate>Fri, 02 Oct 2009 13:00:34 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-54017</guid>
		<description>Saw something on TV about it.  Looks to be about the size of a hawk.  Scientists on show agreed that it was a glider and in wind tunnel tests figured out that the back legs extended behind it as a sort of rudder.  My guess is that as wings evolved, the &quot;rear wings&quot; became redundant and only created drag.</description>
		<content:encoded><![CDATA[<p>Saw something on TV about it.  Looks to be about the size of a hawk.  Scientists on show agreed that it was a glider and in wind tunnel tests figured out that the back legs extended behind it as a sort of rudder.  My guess is that as wings evolved, the &#8220;rear wings&#8221; became redundant and only created drag.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Harry Cook</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-53368</link>
		<dc:creator>Harry Cook</dc:creator>
		<pubDate>Thu, 01 Oct 2009 03:40:13 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-53368</guid>
		<description>I have been trying to find out about the size and weight of this creature, can anyone help?</description>
		<content:encoded><![CDATA[<p>I have been trying to find out about the size and weight of this creature, can anyone help?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Michael</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-53147</link>
		<dc:creator>Michael</dc:creator>
		<pubDate>Wed, 30 Sep 2009 13:16:23 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-53147</guid>
		<description>My first thought is that I hope this isn&#039;t another hoax perpetrated by some Chinese folks looking for fame and fortune and a bit of fun at the West&#039;s expense. It has happened more than once before.

If confirmed [with more fossil evidence] it would add to the growing evidence that birds are latter day dinosaurs. That is pretty cool, as science goes nowadays.</description>
		<content:encoded><![CDATA[<p>My first thought is that I hope this isn&#8217;t another hoax perpetrated by some Chinese folks looking for fame and fortune and a bit of fun at the West&#8217;s expense. It has happened more than once before.</p>
<p>If confirmed [with more fossil evidence] it would add to the growing evidence that birds are latter day dinosaurs. That is pretty cool, as science goes nowadays.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: goulet</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52947</link>
		<dc:creator>goulet</dc:creator>
		<pubDate>Wed, 30 Sep 2009 02:59:00 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52947</guid>
		<description>Good lord. How many people are still ignorant to the fact that birds are reptiles??? They&#039;re included in the clade of archosaurs.

We&#039;ve already figured out birds, people. The bigger mystery is where turtles fit on the tree of life :)</description>
		<content:encoded><![CDATA[<p>Good lord. How many people are still ignorant to the fact that birds are reptiles??? They&#8217;re included in the clade of archosaurs.</p>
<p>We&#8217;ve already figured out birds, people. The bigger mystery is where turtles fit on the tree of life :)</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Zachary</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52905</link>
		<dc:creator>Zachary</dc:creator>
		<pubDate>Wed, 30 Sep 2009 00:03:10 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52905</guid>
		<description>New plan, take personal ignorance to systems already well understood, claim no one can make sense of them because you can&#039;t, and act as if it somehow supports a completely different theory with no evidence in its favor. The argument from personal incredulity, really people?</description>
		<content:encoded><![CDATA[<p>New plan, take personal ignorance to systems already well understood, claim no one can make sense of them because you can&#8217;t, and act as if it somehow supports a completely different theory with no evidence in its favor. The argument from personal incredulity, really people?</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: amphiox</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52825</link>
		<dc:creator>amphiox</dc:creator>
		<pubDate>Tue, 29 Sep 2009 16:06:36 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52825</guid>
		<description>Oh, and the embryonic cell layer from which feathers develop is present in crocodylians, but sloughs off during development. The archosaur common ancestor of birds, dinosaurs and crocodylians already had it.</description>
		<content:encoded><![CDATA[<p>Oh, and the embryonic cell layer from which feathers develop is present in crocodylians, but sloughs off during development. The archosaur common ancestor of birds, dinosaurs and crocodylians already had it.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: amphiox</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52824</link>
		<dc:creator>amphiox</dc:creator>
		<pubDate>Tue, 29 Sep 2009 16:03:54 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52824</guid>
		<description>Arv Edgeworth #11:

&quot;tough skin and no glands to tender skin with glands&quot;

Evolved in theropod dinosaurs. Also, mammals did this independently, so this isn&#039;t a hard thing to achieve. Living birds still have both types of skin - touch, scaly skin on their legs.

&quot;lowest metabolic rate on earth to the highest&quot;

Evolved in theropod dinosaurs, and probably increased some more in birds. But reptiles don&#039;t have the &quot;lowest metabolic rate on earth&quot; so what&#039;s your point? High metabolic rate has been evolved independently numerous times - mammals, birds and theropod dinosaurs, great white sharks, bluefin tuna, just to name a few. Increasing metabolic rate is a very easy thing to evolve.

&quot;no muscles for flight to said muscles&quot;

Flight muscles are pectoral muscles. Reptiles already had them from the start. It was just a question of making them bigger. Not difficult.

&quot;developed a system to control body heat&quot;

Already present in theropod dinosaurs.

&quot;developed different lungs, heart, eyes, reproductive systems, etc&quot;

Lungs - already present in theropod dinosaurs. Heart - already present earlier in the archosaur lineage, crocodylians have complex four-chambered hearts. Eyes - already present in earliest reptiles, bird eyes aren&#039;t fundamentally that different. Reproductive system - already present in theropod dinosaurs

&quot;went from a creature that kept growing its whole life to a creature that reaches a growth limit and stops like other creatures&quot;

Already present in theropod dinosaurs

&quot;Well, they do kind of look like reptiles with the feathers off&quot;

No, they look like &quot;reptiles&quot; (dinosaurs) with the feathers ON.</description>
		<content:encoded><![CDATA[<p>Arv Edgeworth #11:</p>
<p>&#8220;tough skin and no glands to tender skin with glands&#8221;</p>
<p>Evolved in theropod dinosaurs. Also, mammals did this independently, so this isn&#8217;t a hard thing to achieve. Living birds still have both types of skin &#8211; touch, scaly skin on their legs.</p>
<p>&#8220;lowest metabolic rate on earth to the highest&#8221;</p>
<p>Evolved in theropod dinosaurs, and probably increased some more in birds. But reptiles don&#8217;t have the &#8220;lowest metabolic rate on earth&#8221; so what&#8217;s your point? High metabolic rate has been evolved independently numerous times &#8211; mammals, birds and theropod dinosaurs, great white sharks, bluefin tuna, just to name a few. Increasing metabolic rate is a very easy thing to evolve.</p>
<p>&#8220;no muscles for flight to said muscles&#8221;</p>
<p>Flight muscles are pectoral muscles. Reptiles already had them from the start. It was just a question of making them bigger. Not difficult.</p>
<p>&#8220;developed a system to control body heat&#8221;</p>
<p>Already present in theropod dinosaurs.</p>
<p>&#8220;developed different lungs, heart, eyes, reproductive systems, etc&#8221;</p>
<p>Lungs &#8211; already present in theropod dinosaurs. Heart &#8211; already present earlier in the archosaur lineage, crocodylians have complex four-chambered hearts. Eyes &#8211; already present in earliest reptiles, bird eyes aren&#8217;t fundamentally that different. Reproductive system &#8211; already present in theropod dinosaurs</p>
<p>&#8220;went from a creature that kept growing its whole life to a creature that reaches a growth limit and stops like other creatures&#8221;</p>
<p>Already present in theropod dinosaurs</p>
<p>&#8220;Well, they do kind of look like reptiles with the feathers off&#8221;</p>
<p>No, they look like &#8220;reptiles&#8221; (dinosaurs) with the feathers ON.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: amphiox</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52820</link>
		<dc:creator>amphiox</dc:creator>
		<pubDate>Tue, 29 Sep 2009 15:45:44 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52820</guid>
		<description>Buzz Aldrin #8:

Other possibilities: parachuting after jumping from trees or cliffs, so they can climb higher and faster and get down safely more easily, aiding in jumping to escape predators or catch prey, sexual display, a net for catching insects, etc.

If it turns out they were not used for gliding, flying, or parachuting, then they are not wings. They are arms and legs with long feathers attached to them.</description>
		<content:encoded><![CDATA[<p>Buzz Aldrin #8:</p>
<p>Other possibilities: parachuting after jumping from trees or cliffs, so they can climb higher and faster and get down safely more easily, aiding in jumping to escape predators or catch prey, sexual display, a net for catching insects, etc.</p>
<p>If it turns out they were not used for gliding, flying, or parachuting, then they are not wings. They are arms and legs with long feathers attached to them.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Arv Edgeworth</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52739</link>
		<dc:creator>Arv Edgeworth</dc:creator>
		<pubDate>Tue, 29 Sep 2009 10:25:12 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52739</guid>
		<description>Now if we can figure out how birds went from tough skin and no glands to tender skin with glands; went from the lowest metabolic rate on earth to the highest; no muscles for flight to said muscles; developed a system to control body heat; developed different lungs, heart, eyes, reproductive systems, etc.; went from a creature that kept growing its whole life to a creature that reaches a growth limit and stops like other creatures, just to mention a few things we haven&#039;t figured out yet. Of course feathers come from different genetic information than scales do and attach differently to the skin. Oh wait, I&#039;m sorry, we&#039;re not supposed to look for differences, just similarities. Well, they do kind of look like reptiles with the feathers off.</description>
		<content:encoded><![CDATA[<p>Now if we can figure out how birds went from tough skin and no glands to tender skin with glands; went from the lowest metabolic rate on earth to the highest; no muscles for flight to said muscles; developed a system to control body heat; developed different lungs, heart, eyes, reproductive systems, etc.; went from a creature that kept growing its whole life to a creature that reaches a growth limit and stops like other creatures, just to mention a few things we haven&#8217;t figured out yet. Of course feathers come from different genetic information than scales do and attach differently to the skin. Oh wait, I&#8217;m sorry, we&#8217;re not supposed to look for differences, just similarities. Well, they do kind of look like reptiles with the feathers off.</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: Zachary</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52675</link>
		<dc:creator>Zachary</dc:creator>
		<pubDate>Tue, 29 Sep 2009 03:10:25 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52675</guid>
		<description>So not allowed to discover corroborating evidence after a theory is offered, only the evidence in favor prior to a systematic explanation is valid? Good thing no one told Milliken, Maxwell, Einstein, Lavoisier, Pasteur, .........</description>
		<content:encoded><![CDATA[<p>So not allowed to discover corroborating evidence after a theory is offered, only the evidence in favor prior to a systematic explanation is valid? Good thing no one told Milliken, Maxwell, Einstein, Lavoisier, Pasteur, &#8230;&#8230;&#8230;</p>
]]></content:encoded>
	</item>
	<item>
		<title>By: scribbler</title>
		<link>http://blogs.discovermagazine.com/80beats/2009/09/28/four-winged-dino-clinches-the-case-for-bird-evolution/comment-page-1/#comment-52663</link>
		<dc:creator>scribbler</dc:creator>
		<pubDate>Tue, 29 Sep 2009 01:55:42 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/80beats/?p=3624#comment-52663</guid>
		<description>Is it just me?

All of the hoaxes of the past century came from far off lands where documentation was scarce if there was any at all?

See, I&#039;d have a much easier time of this if they had found these fossils BEFORE the theory was proffered...

;-)</description>
		<content:encoded><![CDATA[<p>Is it just me?</p>
<p>All of the hoaxes of the past century came from far off lands where documentation was scarce if there was any at all?</p>
<p>See, I&#8217;d have a much easier time of this if they had found these fossils BEFORE the theory was proffered&#8230;</p>
<p>;-)</p>
]]></content:encoded>
	</item>
</channel>
</rss>
