PRO

Where Your Ideas can change Minds

Please visit our new forum at

http://www.4forums.com

CON


YouDebate.com Forum
» back to YouDebate.com
Register | Profile | Log In | Lost Password | Active Users | Help | Board Rules | Search | FAQ |
Custom Search
» You are not logged in.   log in | register

  YouDebate.com Forum
   Creationism vs Evolution Debates
     Dinosaur Feathers Found in Amb
       Protofeather fossils discovered entombed in amber from

Topic Jump
« Back | Next »
[ Single page for this topic ]
Forum moderated by: admin
    

    
Galileo

|     |       Report Post




Regular
Post Score
Adjustment:
n/a

Rate this post:

Neat!

Dino Feathers

http://www.theatlantic.com/life/archive/2011/09/dinosaur-feathers-found-in-amber-reinforce-evolution-theories/245094/#slide5


-------
Hallowed are the Invisible Pink Unicorns
 


Posts: 160 | Posted: 04:13 AM on September 20, 2011 | IP
orion

|      |       Report Post




Fanatic
Post Score
Adjustment:
n/a

Rate this post:

Very interesting, Galileo.  The case for a close evolutionary relationship between dinosaurs and birds certainly seems logical from looking at the evidence.  
 


Posts: 1459 | Posted: 9:08 PM on September 20, 2011 | IP
orion

|      |       Report Post




Fanatic
Post Score
Adjustment:
n/a

Rate this post:

Funny, while I was reading the above article last night I was wondering why the ancestors to birds survived the K-T extinction, but dinosaurs didn't.

Then this morning the following article on that very subject show up in Science Daily.

Primitive Birds Shared Dinosaurs' Fate


Longrich believes a small fraction of the Cretaceous bird species survived the impact, giving rise to today's birds. The birds he examined showed much more diversity than had yet been seen in birds from the late Cretaceous, ranging in size from that of a starling up to a small goose. Some had long beaks full of teeth.

Yet modern birds are very different from those that existed during the late Cretaceous, Longrich said. For instance, today's birds have developed a much wider range of specialized features and behaviors, from penguins to hummingbirds to flamingoes, while the primitive birds would have occupied a narrower range of ecological niches.

"The basic bird design was in place, but all of the specialized features developed after the mass extinction, when birds sort of re-evolved with all the diversity they display today," Longrich said. "It's similar to what happened with mammals after the age of the dinosaurs."


So the demise of the dinosaurs 65 million years ago opened up new ecological niches for the evolution and radiation of bird species, just as it did for mammals.

Note the comment above - bird fossils showing 'birds with teeth'.  Again, it all fits very nicely for ToE.  But Creationism offers no explanation.

 


Posts: 1459 | Posted: 06:31 AM on September 21, 2011 | IP
Rukbat

|     |       Report Post



Newbie
Post Score
Adjustment:
n/a

Rate this post:

Quote from orion at 01:31 AM on September 21, 2011 :Yet modern birds are very different from those that existed during the late Cretaceous, Longrich said. For instance, today's birds have developed a much wider range of specialized features and behaviors, from penguins to hummingbirds to flamingoes, while the primitive birds would have occupied a narrower range of ecological niches.
Another point to remember - most animals never fossilize, and most fossils don't get found.  There might have been a much larger diversity just before the KT event.  (It's difficult to not find a 10 foot long femur.  Finding one the size a hummingbird carries is a lot more difficult.)

"The basic bird design was in place, but all of the specialized features developed after the mass extinction, when birds sort of re-evolved with all the diversity they display today," Longrich said. "It's similar to what happened with mammals after the age of the dinosaurs."
Really?  Theropoda (dinosaurs) includes Aves (birds), and there was quite a large diversity of Theropoda.  It sounds like a bit of cherry picking to me.

So the demise of the dinosaurs 65 million years ago opened up new ecological niches for the evolution and radiation of bird species, just as it did for mammals.
The demise of the Theropods eliminated a lot of Theropod species (including avian species).

Note the comment above - bird fossils showing 'birds with teeth'.  Again, it all fits very nicely for ToE.  But Creationism offers no explanation.
They do, but I just don't buy it.  It's "God has his reasons".  Sounds like the work of a deranged lunatic to me.  Or evolution and the Drunkard's Walk.
 


Posts: 5 | Posted: 10:01 PM on December 17, 2011 | IP
Fencer27

|      |       Report Post




Junkie
Post Score
Adjustment:
n/a

Rate this post:

Quote from Rukbat at 10:01 PM on December 17, 2011 :
"The basic bird design was in place, but all of the specialized features developed after the mass extinction, when birds sort of re-evolved with all the diversity they display today," Longrich said. "It's similar to what happened with mammals after the age of the dinosaurs."
Really?  Theropoda (dinosaurs) includes Aves (birds), and there was quite a large diversity of Theropoda.  It sounds like a bit of cherry picking to me.


Don't know how it is cherry picking. Only a sub-group of theropods, the maniraptors (and only a sub-group of them), evolved into birds, not all of them.

So the demise of the dinosaurs 65 million years ago opened up new ecological niches for the evolution and radiation of bird species, just as it did for mammals.
The demise of the Theropods eliminated a lot of Theropod species (including avian species).


Perhaps, but that elimination left potential niches open for what remained of aves. It's standard evolutionary theory.


-------
"So in everything, do to others what you would have them do to you, for this sums up the Law and the Prophets." - Jesus (Matthew 7:12)
 


Posts: 551 | Posted: 01:53 AM on December 22, 2011 | IP
    
[ Single page for this topic ]

Topic Jump
« Back | Next »
[ Single page for this topic ]
Forum moderated by: admin
    

Topic options: Lock topic | Unlock topic | Make Topic Sticky | Remove Sticky | Delete thread | Move thread | Merge thread

 

© YouDebate.com
Powered by: ScareCrow version 2.12
© 2001 Jonathan Bravata. All rights reserved.