TheWhiteRaider Posted November 20, 2002 Share Posted November 20, 2002 Which do you think they are? Link to comment Share on other sites More sharing options...
JediNyt Posted November 20, 2002 Share Posted November 20, 2002 No one knows for sure. Some were warm some were cold. Thats about all the fact we know about. Link to comment Share on other sites More sharing options...
TheWhiteRaider Posted November 20, 2002 Author Share Posted November 20, 2002 I think the realy big ones had to be warm blooded. I think the surface to mass ratio alone would show that. I mean take a T-Rex a very big dino. He would have to sun himself alot to get warm and by the time he did he it would be dark almost. Link to comment Share on other sites More sharing options...
-s/<itzo- Posted November 20, 2002 Share Posted November 20, 2002 you really can't consider dinosaurs neither cold nor warm blooded in general because there are alot of different types. if you can be specific to what type, then you can make the assumption whether they are cold or warm blooded. Link to comment Share on other sites More sharing options...
Taos Posted November 20, 2002 Share Posted November 20, 2002 Well, I'd have to say that dinosaurs were cold blooded. Mostly because they were reptiles and reptiles are cold blooded. Link to comment Share on other sites More sharing options...
[RAA]-=Chi3f=- Posted November 20, 2002 Share Posted November 20, 2002 Giant egg laying reptiles = cold blooded. I learned that in a geneology/palentology class in high school, lol Link to comment Share on other sites More sharing options...
Eldritch Posted November 20, 2002 Share Posted November 20, 2002 Cold-blooded, just like most other reptiles. (Dinosaur = terrible lizard; lizard = reptile) Link to comment Share on other sites More sharing options...
PhantomHelix Posted November 20, 2002 Share Posted November 20, 2002 yeah, i think they are cold-blooded. all reptiles are, and they are from the reptile family (for the most part)..... Link to comment Share on other sites More sharing options...
Rogue15 Posted November 20, 2002 Share Posted November 20, 2002 I dunno, maybe they didn't have blood. Link to comment Share on other sites More sharing options...
Kstar__2 Posted November 20, 2002 Share Posted November 20, 2002 they where reptiles (most of them) so cold blooded, some where a sort of birds, so they could be warm Link to comment Share on other sites More sharing options...
Clemme w/Stick Posted November 20, 2002 Share Posted November 20, 2002 Originally posted by JediNyt No one knows for sure. Some were warm some were cold. Thats about all the fact we know about. Well, thats what I think....but it could be proven wrong..! -Clemme Link to comment Share on other sites More sharing options...
-s/<itzo- Posted November 20, 2002 Share Posted November 20, 2002 Originally posted by -=Chi3f=- Giant egg laying reptiles = cold blooded. what about chickens. they lay eggs are they considered cold blooded. like i said before you really can't categorize dinosaurs either cold or warm blooded. cuz some differ from others. Scientists have conflicting opinions on this subject. Some paleontologists think that all dinosaurs were "warm-blooded" in the same sense that modern birds and mammals are. that is, they had rapid metabolic rates. Other scientists think it unlikely that any dinosaur could have had a rapid metabolic rate. Some scientists think that very big dinosaurs could have had warm bodies because of their large body size, just as some sea turtles do today. It may be that some dinosaurs were warm-blooded. The problem is that it is hard to find evidence that unquestionably shows what dinosaur metabolisms were like. Link to comment Share on other sites More sharing options...
C'jais Posted November 20, 2002 Share Posted November 20, 2002 What Skitzo says is correct. If you've ever seen the dinosaur with the huge "sail" or windshield on it's back (can't remember the name), then you would assume they were cold blooded as the only logical explanation of the "solar sail" is that it used it to collect heat from the sun very rapidly. Birds evolved from dino's (or did they? see evolution thread) and they are warm blooded as far as I know - another point to debate. Link to comment Share on other sites More sharing options...
ckcsaber Posted November 20, 2002 Share Posted November 20, 2002 Actually the "sails" on the back of dinosaurs supports that they were warm blooded (endotherms). These "sails' were believed to radiate away excess body heat. More supporting evidence for dinosaurs being warm-blooded is that many were found in the arctic and antarctic, where cold-blooded animals could not survive Link to comment Share on other sites More sharing options...
C'jais Posted November 20, 2002 Share Posted November 20, 2002 Originally posted by ckcsaber Actually the "sails" on the back of dinosaurs supports that they were warm blooded (endotherms). These "sails' were believed to radiate away excess body heat. More supporting evidence for dinosaurs being warm-blooded is that many were found in the arctic and antarctic, where cold-blooded animals could not survive You know what, you're absolutely right. Dinosaurs have indeed found to be living on antarctica. And the solar sail theory you present sounds much more plausible than mine. Link to comment Share on other sites More sharing options...
Rogue15 Posted November 20, 2002 Share Posted November 20, 2002 there's no proof they had sails, is there? (btw that dino's name is Dimetrodon) I guess a sail would've been a logical explanation for the spines though. Link to comment Share on other sites More sharing options...
[RAA]-=Chi3f=- Posted November 20, 2002 Share Posted November 20, 2002 Originally posted by -s/<itzo- what about chickens. they lay eggs are they considered cold blooded. like i said before you really can't categorize dinosaurs either cold or warm blooded. cuz some differ from others. Scientists have conflicting opinions on this subject. Some paleontologists think that all dinosaurs were "warm-blooded" in the same sense that modern birds and mammals are. that is, they had rapid metabolic rates. Other scientists think it unlikely that any dinosaur could have had a rapid metabolic rate. Some scientists think that very big dinosaurs could have had warm bodies because of their large body size, just as some sea turtles do today. It may be that some dinosaurs were warm-blooded. The problem is that it is hard to find evidence that unquestionably shows what dinosaur metabolisms were like. You have a point, but... First we're not talking about warm blooded chickens and the fowl family, we are talking about cold-blooded reptiles. There is evidence to prove that reptiles and the reptile like dinosaurs are cold-blooded. Second, not everything in that time period, as historians have found, was a reptile. Other forms of life were around that spawned what we know today as domestic and wild animals. It's like a person that lives in a different climate develops different physical and social charecteristics. It's how life adapts to the environment. Maybe being cold-blooded is a natural response to the environment at prehistoric times. Who knows, I wasn't there, lol Third you have to use your judgement on this. I've never been to Australia, but a globe tells me it's there. A globe tells me a lot about the Earth that I don't really know to be true. How can I really be sure any of it's true? There comes a point where you have to rely on instinct as well as fact, ya know? All forms of reptiles today are cold-blooded. What's to say they weren't millions of years ago? This is one of the many questions that we'll probably never know the answer to. Good topic, btw Link to comment Share on other sites More sharing options...
-s/<itzo- Posted November 20, 2002 Share Posted November 20, 2002 -=Chi3f=- my bad, i was just being sacrcastic on that egg/chicken comment. i taught it was funny. and yes indeed, it is a good topic. Link to comment Share on other sites More sharing options...
ckcsaber Posted November 20, 2002 Share Posted November 20, 2002 Originally posted by Rogue15 there's no proof they had sails, is there? Skeltons have been found like this And I think some people might have found a tissue sample of the sail. Link to comment Share on other sites More sharing options...
C'jais Posted November 20, 2002 Share Posted November 20, 2002 If dinosaurs lived on antarctica, how could they have been cold blooded? Either they were a mix of warm and cold blooded creatures (with warm blooded ones adapting to a freezing environment), or they were all warm blooded, IMO. EDIT - I suddenly remember something: I think it's been theorized that antarctica was once a lush, hot climate - but I'm not too sure. Link to comment Share on other sites More sharing options...
ckcsaber Posted November 20, 2002 Share Posted November 20, 2002 In my opinion it was both warm blooded and cold blooded. If herbivores (plant eating dinosaurs) were warm-blooded they would have to eat 10 times the amount of calories a cold-blooded animal would. This means they would have trouble finding enough food for their immense body mass if they were warmblooded, but if cold blooded they would not need to eat as much. I believe that the meat-eating dinosaurs were warm-blooded and the giant plant-eating dinosaurs were cold-blooded. Link to comment Share on other sites More sharing options...
[RAA]-=Chi3f=- Posted November 20, 2002 Share Posted November 20, 2002 Originally posted by Cjais If dinosaurs lived on antarctica, how could they have been cold blooded? Either they were a mix of warm and cold blooded creatures (with warm blooded ones adapting to a freezing environment), or they were all warm blooded, IMO. EDIT - I suddenly remember something: I think it's been theorized that antarctica was once a lush, hot climate - but I'm not too sure. I think you're right. Lizards can live in cold climates. In exteme cold temperatures, reptiles burrow into the soil where heat doesn't escape. The polar caps haven't been around forever. It may have been one of the reasons why dinosaurs became extinct. It may also be why animals, like the whooly mammoth, came to be. Who knows, but good point. @ -s/<itzo-: Oh no, I'm just being a smart ass, lol. Under no circumstances do I get pissed at a fellow swampie. The -=DoW=- clan on the other hand... He he he... Link to comment Share on other sites More sharing options...
ckcsaber Posted November 20, 2002 Share Posted November 20, 2002 I do not think that Antarctica was a hot climate. At least not during the dinosaurs time but I am not sure. Regarding coldblooded dino's living in extrem cold conditions, they can't live under ground all the time. They would be extremly sluggish and you have to be alert to hunt in that weather. Link to comment Share on other sites More sharing options...
[RAA]-=Chi3f=- Posted November 20, 2002 Share Posted November 20, 2002 Originally posted by ckcsaber In my opinion it was both warm blooded and cold blooded. If herbivores (plant eating dinosaurs) were warm-blooded they would have to eat 10 times the amount of calories a cold-blooded animal would. This means they would have trouble finding enough food for their immense body mass if they were warmblooded, but if cold blooded they would not need to eat as much. I believe that the meat-eating dinosaurs were warm-blooded and the giant plant-eating dinosaurs were cold-blooded. Another good point. Environmental adaptation. Boy, we should start a Swampies science team, we bad! we bad! Link to comment Share on other sites More sharing options...
ckcsaber Posted November 20, 2002 Share Posted November 20, 2002 Hell yeah. We could unlock the mystery's of the world right here in the Swamp:D Link to comment Share on other sites More sharing options...
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