Start A Petition

Dinosaur Debate Gets Cooking

Science & Tech  (tags: ancient, discovery, environment, interesting, news, research, study, University of Barcelona, world )

- 2210 days ago -
The University of Barcelona contradicts evidence that dinosaurs are cold-blooded by showing annual growth lines etched in the femurs of warm-blooded mammals are similar to dinosaurs, as logged by Sunstroke author David Kagan in Doomwatch Legacy.

Select names from your address book   |   Help

We hate spam. We do not sell or share the email addresses you provide.


Kristen H (25)
Thursday June 28, 2012, 5:20 am
Interesting... thanks for posting.

Teresa W (782)
Thursday June 28, 2012, 8:26 am
noted, thank you

Terry V (30)
Thursday June 28, 2012, 9:03 am

Past Member (0)
Thursday June 28, 2012, 5:20 pm

Stephen Brian (23)
Thursday June 28, 2012, 6:43 pm
I think the dividing line between warm- and cold-blooded animals is visible in crocodiles: Their hearts are similar to human-hearts, efficient enough for the levels of metabolism needed to be warm-blooded. However, they are not.

Dinosaurs would have to have had good circulation to survive at their sizes, putting them at least on the borderline. Adding in the higher oxygen-content of the atmosphere in their time (and before, as they evolved), perhaps they could have had the necessary metabolism to maintain constant internal temperature (warm blood) even without the evolutionary steps which give us that metabolism now.

John B (185)
Thursday June 28, 2012, 9:16 pm
Thanks for the posting the link to the extremely interesting article Dan. Read and noted.

Robby R (15)
Friday June 29, 2012, 4:22 am

Lindsay K (6)
Friday June 29, 2012, 3:29 pm
Fascinating - thanks for posting!

M B (62)
Friday June 29, 2012, 5:05 pm
Interesting, thanks.

Jeremy S (3)
Saturday June 30, 2012, 1:17 pm
That's fascinating--so dinosaurs just might be closer related to us than we think...Of course, some people are pretty cold-blooded already...

Shan D (49)
Saturday June 30, 2012, 3:39 pm
This is not a new controversy, but new data is always interesting.

Kerrie G (116)
Sunday July 1, 2012, 8:07 am
Noted, thanks.

Fred Krohn (34)
Sunday July 1, 2012, 4:14 pm
Why wouldn't dinosaurs be warm blooded? Those that evolved into birds likely were. The various fast carnivores likely were. But it took species with the ability to insulate themselves from temperature fluctuations generated by a major meteor strike in the Gulf of Mexico to survive to modern times, whether they were cold or warm blooded.

Past Member (0)
Tuesday July 3, 2012, 1:47 am

Talya H (10)
Tuesday July 3, 2012, 7:31 pm
Thanks for the article!

. (0)
Thursday July 5, 2012, 11:54 am
Although this is fascinating, I would think paleontologists had this in mind only to prove it.How can you look at giraffes, hippos, etc., and not make an evolution connection.

Nimue Michelle Pendragon Gaze (339)
Thursday July 5, 2012, 6:43 pm
Noted thanks.

Sue Matheson (79)
Thursday July 5, 2012, 7:00 pm

Marie W (67)
Friday July 6, 2012, 9:33 pm

Past Member (0)
Saturday July 7, 2012, 5:00 am
Thanks for post.

Julia R (297)
Saturday July 7, 2012, 4:38 pm
Very interesting article! I definitely learned something. Thanks for post.

Phillipa W (199)
Saturday July 7, 2012, 11:20 pm
spammers not welcome on Care2 please advertise your sites somewhere else. None of those are things people here would buy anyway.

anyway, back to the article. I've heard the argument they were warm-blooded before, and any evidence is interesting, but I'm not convinced similar growth patterns to mammals is definitive for me. But I'm open-minded. I believe it's highly possible some fore-runners to warm-blooded creatures and the first ones evolved at some point. Maybe that's what these are and some were indeed warm-blooded? After all, warm-blooded creatures did exist long before dinosaurs became extinct, and it was their survival which gave rise to the age of mammals we now live in.
Or, log in with your
Facebook account:
Please add your comment: (plain text only please. Allowable HTML: <a>)

Track Comments: Notify me with a personal message when other people comment on this story

Loading Noted By...Please Wait


butterfly credits on the news network

  • credits for vetting a newly submitted story
  • credits for vetting any other story
  • credits for leaving a comment
learn more

Most Active Today in Science & Tech

Content and comments expressed here are the opinions of Care2 users and not necessarily that of or its affiliates.

New to Care2? Start Here.