Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Fossil Solves Mystery of Dinosaur Finger Evolution
LiveScience.com on Yahoo ^ | 6/17/09 | Jeanna Bryner

Posted on 06/17/2009 2:31:39 PM PDT by NormsRevenge

Bird wings clearly share ancestry with dinosaur "hands" or forelimbs. A school kid can see it in the bones. But paleontologists have long struggled to explain the so-called digit dilemma.

Here's the problem: The most primitive dinosaurs in the famous theropod group (that later included Tyrannosaurus rex) had five "fingers." Later theropods had three, just like the birds that evolved from them. But which digits? The theropod and bird digits failed to match up if you number the digits from 1 to 5 starting with the thumb. Theropods looked like they had digits 1, 2 and 3, while birds have digits 2, 3 and 4.

That mismatch failed to support the widely accepted evolutionary link between dinosaurs and birds.

Now, newly described fossilized hands from a beaked, plant-eating dinosaur, called Limusaurus inextricabilis, reveal a transitional step in the evolution of modern wings from dino digits. The finding could resolve a debate over which fingers ultimately became embedded in the wing.

"Limusaurus is another one of those discoveries that makes one excited to be a paleontologist," said Matthew Lamanna of the Carnegie Museum of Natural History in Pittsburgh, .. "The discovery of a toothless, plant-eating Jurassic ceratosaur, from Asia of all places, is something that nobody in our field ever expected."

The remains of the dinosaur were discovered in the Junggar Basin of Xinjiang, in northwestern China. The deposits date back some 159 million years.

"This new animal is fascinating in and of itself, and when placed into an evolutionary context it offers intriguing evidence about how the hand of birds evolved," said James Clark of George Washington University. ..

Jack Conrad, vertebrate paleontologist at the American Museum of Natural History in New York, calls the finding a "spectacular discovery." Conrad was not involved in this current research.

(Excerpt) Read more at news.yahoo.com ...


TOPICS: History; Science
KEYWORDS: dinosaur; evolution; finger; fossil; godsgravesglyphs; junkscience; mystery; sciencefiction; showmethefossils; storkzilla
Navigation: use the links below to view more comments.
first 1-2021-4041-53 next last

1 posted on 06/17/2009 2:31:39 PM PDT by NormsRevenge
[ Post Reply | Private Reply | View Replies]

The newly identified dinosaur, Limusaurus inextricabilis, may have used its three-fingered hands to help it stand upright from a lying position. (Note that there is no direct evidence of feather-like structures.) Credit: Portia Sloan


2 posted on 06/17/2009 2:33:21 PM PDT by NormsRevenge (Semper Fi ... Godspeed.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: NormsRevenge

3 posted on 06/17/2009 2:40:13 PM PDT by JoeProBono (A closed mouth gathers no feet)
[ Post Reply | Private Reply | To 2 | View Replies]

To: NormsRevenge
Fossil Solves Mystery of Dinosaur Finger Evolution

It's only a mystery if one believes in such nonsense.

ML/NJ

4 posted on 06/17/2009 2:43:10 PM PDT by ml/nj
[ Post Reply | Private Reply | To 1 | View Replies]

To: NormsRevenge
Birds could not have evolved from dinosaur
5 posted on 06/17/2009 2:48:10 PM PDT by LiteKeeper (When do the impeachment proceedings begin?)
[ Post Reply | Private Reply | To 1 | View Replies]

To: NormsRevenge

Did the evolutionists just give the skeptics the finger?


6 posted on 06/17/2009 2:50:28 PM PDT by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: tacticalogic

No, evolutionists doesn’t give the skeptics anything more than lies with which to justify their deviant nature.

The bible, the word of god - is pretty clear on this issue.


7 posted on 06/17/2009 3:06:27 PM PDT by rudman
[ Post Reply | Private Reply | To 6 | View Replies]

To: rudman

Are the geologists and astrophysicists deviants, too?


8 posted on 06/17/2009 3:10:42 PM PDT by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
[ Post Reply | Private Reply | To 7 | View Replies]

To: NormsRevenge

“The newly identified dinosaur, Limusaurus

I don’t know what it did with it’s little appendages,
but I promise you that thing could never fly!

Of course, after thousands of those things died because
they didn’t have the power of flight, the rest held a
council and determined they would have to change.
After a lot of discussion, they decided to grow wings
through selective breeding. Fortunately, they had billions
of years to accomplish the transition...

uh huh.


9 posted on 06/17/2009 3:15:20 PM PDT by aMorePerfectUnion
[ Post Reply | Private Reply | To 2 | View Replies]

To: tacticalogic

http://www.freerepublic.com/tag/storkzilla/index


10 posted on 06/17/2009 3:20:12 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
[ Post Reply | Private Reply | To 8 | View Replies]

To: NormsRevenge
In other science fiction non-news,
11 posted on 06/17/2009 3:24:46 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: The Spirit Of Allegiance

?


12 posted on 06/17/2009 3:28:02 PM PDT by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
[ Post Reply | Private Reply | To 10 | View Replies]

To: tacticalogic

An artist’s rendition of a theory doth not a fossil record make.


13 posted on 06/17/2009 3:29:45 PM PDT by The Spirit Of Allegiance (Public Employees: Honor Your Oaths! Defend the Constitution from Enemies--Foreign and Domestic!)
[ Post Reply | Private Reply | To 12 | View Replies]

To: The Spirit Of Allegiance
An artist’s rendition of a theory doth not a fossil record make.

I think pretty much everyone knows that.

14 posted on 06/17/2009 3:33:08 PM PDT by tacticalogic ("Oh bother!" said Pooh, as he chambered his last round.)
[ Post Reply | Private Reply | To 13 | View Replies]

To: NormsRevenge; StayAt HomeMother; Ernest_at_the_Beach; 1ofmanyfree; 21twelve; 24Karet; ...

· join list or digest · view topics · view or post blog · bookmark · post a topic ·

 
Gods
Graves
Glyphs
Thanks NormsRevenge.

To all -- please ping me to other topics which are appropriate for the GGG list.
GGG managers are SunkenCiv, StayAt HomeMother, and Ernest_at_the_Beach
 

·Dogpile · Archaeologica · ArchaeoBlog · Archaeology · Biblical Archaeology Society ·
· Discover · Nat Geographic · Texas AM Anthro News · Yahoo Anthro & Archaeo · Google ·
· The Archaeology Channel · Excerpt, or Link only? · cgk's list of ping lists ·


15 posted on 06/17/2009 3:50:24 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/__Since Jan 3, 2004__Profile updated Monday, January 12, 2009)
[ Post Reply | Private Reply | To 1 | View Replies]

To: SunkenCiv

uh-oh... just posted it from NatGeo...


16 posted on 06/17/2009 3:52:25 PM PDT by xcamel (The urge to save humanity is always a false front for the urge to rule it. - H. L. Mencken)
[ Post Reply | Private Reply | To 15 | View Replies]

To: The Spirit Of Allegiance

Looks like something out of The Dark Crystal...


17 posted on 06/17/2009 3:53:54 PM PDT by Monkey Face (RUN, SARAH, RUN! ~~ (Stolen from redhead))
[ Post Reply | Private Reply | To 11 | View Replies]

To: SunkenCiv

You have mail...


18 posted on 06/17/2009 3:54:16 PM PDT by Monkey Face (RUN, SARAH, RUN! ~~ (Stolen from redhead))
[ Post Reply | Private Reply | To 15 | View Replies]

To: NormsRevenge

Tastes like the winged hairy apeterix.


19 posted on 06/17/2009 4:26:17 PM PDT by wildbill ( The reason you're so jealous is that the voices talk only to me.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: rudman

“The bible, the word of god - is pretty clear on this issue.”

It is. I’m sure that you also buy your slaves from the nations around you (Leviticus 25:44-45).


20 posted on 06/17/2009 4:45:51 PM PDT by Buck W. (The President of the United States IS named Schickelgruber...)
[ Post Reply | Private Reply | To 7 | View Replies]


Navigation: use the links below to view more comments.
first 1-2021-4041-53 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson