Dog Site - Dog Stuff
Dog Forum | Dog Pictures

Go Back   Chazhound Dog Forum > Dog Discussions and Dog Talk Forums > Dogs - General Dog Chat


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #11  
Old 01-26-2013, 08:59 PM
Red.Apricot's Avatar
Red.Apricot Red.Apricot is offline
Top Dog
 
Join Date: Aug 2011
Location: Southern California
Posts: 2,667
Default

Saying that birds are dinosaurs is not the same as saying that all dinosaur are birds. Current thinking is that 'dinosaur' encompasses two main radiations of animals, and one of those had an off-shoot which led to birds; so the bird clade is nested inside the dinosaur clade. Hence, birds are dinosaurs, in the same way that birds are reptiles, if we're trying to use the terms in a cladistic fashion.

Evolution includes adaption of the type you're talking about, Romy. :] Evolution is more than just speciation; it's the process, driven by selective pressures, by which populations change in gene frequency over time.
Reply With Quote
 

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 02:34 AM.


1997-2013 Chazhound Dog Site