Welcome to City-Data.com Forum!
U.S. CitiesCity-Data Forum Index
Go Back   City-Data Forum > General Forums > Science and Technology
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
 
Old 08-23-2011, 03:22 PM
 
3,423 posts, read 3,207,047 times
Reputation: 3321

Advertisements

Three waves of evolutionary innovation shaped diversity of vertebrates



Over the past 530 million years, the vertebrate lineage branched out from a primitive jawless fish wriggling through Cambrian seas to encompass all the diverse forms of fish, birds, reptiles, amphibians, and mammals.
Now researchers combing through the DNA sequences of vertebrate genomes have identified three distinct periods of evolutionary innovation that accompanied this remarkable diversification.
Moderator cut: quote shortened, copyright protection

Last edited by Yac; 04-20-2012 at 02:03 AM..
Reply With Quote Quick reply to this message

 
Old 08-23-2011, 05:12 PM
 
28,803 posts, read 47,590,355 times
Reputation: 37905
Please learn to separate paragraphs with a blank line. I gave up trying to read your post.
Reply With Quote Quick reply to this message
 
Old 08-23-2011, 06:32 PM
 
Location: Charlotte
679 posts, read 613,745 times
Reputation: 237
why did you post a link and then post the ENTIRE article?

Why not just post the link, give a sum up sentence or something short?
Reply With Quote Quick reply to this message
 
Old 08-23-2011, 08:59 PM
 
3,423 posts, read 3,207,047 times
Reputation: 3321
Sorry. I should have checked it more carefully before I posted. As to why I posted the entire article, I did that because some people are too lazy to actually click on a link, and it is easier to refer to what is said if the article is posted here.
Reply With Quote Quick reply to this message
 
Old 08-23-2011, 09:20 PM
 
Location: Victoria TX
42,579 posts, read 86,764,762 times
Reputation: 36643
If they are too lazy to do that, why do you care if they participate in the discussion or not?
Reply With Quote Quick reply to this message
 
Old 08-23-2011, 09:25 PM
 
3,423 posts, read 3,207,047 times
Reputation: 3321
Quote:
Originally Posted by jtur88 View Post
If they are too lazy to do that, why do you care if they participate in the discussion or not?

Because that's the kind of nice guy I am. Why do you care that I care?

Do you have comments or questions about the content of the orignal post?
Reply With Quote Quick reply to this message
 
Old 08-25-2011, 11:36 AM
 
Location: Victoria TX
42,579 posts, read 86,764,762 times
Reputation: 36643
Quote:
Originally Posted by orogenicman View Post
Because that's the kind of nice guy I am. Why do you care that I care?
If you don't care if we care if you care or not, why did you assume that we cared if you explained to us that you cared?
Reply With Quote Quick reply to this message
 
Old 08-25-2011, 11:47 AM
 
3,423 posts, read 3,207,047 times
Reputation: 3321
Quote:
Originally Posted by jtur88 View Post
If you don't care if we care if you care or not, why did you assume that we cared if you explained to us that you cared?

Oh gee, another Texan. That explains it.
Reply With Quote Quick reply to this message
 
Old 08-28-2011, 10:32 PM
 
Location: Richardson, TX
8,734 posts, read 13,787,377 times
Reputation: 3807
Quote:
Originally Posted by orogenicman View Post
Oh gee, another Texan. That explains it.
Hey, I resemble that remark.
Reply With Quote Quick reply to this message
 
Old 08-29-2011, 06:42 AM
 
Location: On the "Left Coast", somewhere in "the Land of Fruits & Nuts"
8,854 posts, read 10,430,759 times
Reputation: 6670
Quote:
Originally Posted by orogenicman View Post
Because that's the kind of nice guy I am. Why do you care that I care?

Do you have comments or questions about the content of the orignal post?
Yeah, you get the usual trollish comments re: "typography", etc. whenever they're clueless about the subject and can't think of anything else to say. Kinda like internet 'scavengers' prowling for attention (or "bottom feeders" as the case may be).

Actually this research fits American paleontologist Stephen Jay Gould's theory of "punctuated equilibrium", that most evolution is marked by long periods of evolutionary stability, punctuated by instances of branching evolution. His book Wonderful Life especially goes into fascinating detail re: the "Cambrian Explosion", aprox 530 million years ago (prior to the Santa Cruz research), when evolution went thru an incredible period of "experimentation", including many of these unearthly looking critters, which have no modern descendants today (although I suppose certain kinds of "trolls" might qualify)!


Last edited by mateo45; 08-29-2011 at 06:56 AM.. Reason: links..
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.


Reply
Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply
Message:

Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Science and Technology
Similar Threads

All times are GMT -6. The time now is 09:25 AM.

© 2005-2024, Advameg, Inc. · Please obey Forum Rules · Terms of Use and Privacy Policy · Bug Bounty

City-Data.com - Contact Us - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37 - Top