herbiverous dinos,warm or cold blooded?

Hi all,
Does any one any decent evidence to prove whether herbiverous dinos were warm or cold blooded or were they homeothermic?

Well Kenobi that's the 6-million-dollar question, isn't it? The discussion is long and diverse but no evidence was ever found in either way (warm OR cold blooded).

True. It's an age-old debate in the science of Paleontology, Kenobi. And you're certainly not the first, nor will you be the last, to ask this question.

I look at the elephant,rhinoceros and hippopotamus which are all thick skinned and are warm blooded mammals. I don't think it would be to far fetch in thinking that some dinosaurs could have been warm blooded and gave birth to live young.

wow now thats an interestig topic!

Indeed it is, Tyler. In fact, it was Dr. Robert T. Bakker (in the mid 1970s, I believe)that first proposed the concept of endo-thermic dinosaurs and it has been debated ever since. It's a topic that I touch ever so lightly, because, strangely, people get aggressive over debates like this. It's ironic as one would think that Darwinists and Creationists would be the most, and ONLY, "sticky" topic discussed in science. In fact, I try to avoid it all together. Though, it seems that these conversations will be inevitable. Anywho, glad you brought this up, but be careful with posts like these, Kenobi, alright?

wow i wouldint have to go to school any more if i stayed on here every day i learn enough every day from this site!

Were non-avian dinosaurs ectotherms (cold-) or
endotherms (warm-blooded)? <predator/prey, length cubed, insulation>
Hammer and his colleagues say they can clearly make out the aorta and two ventricles
in the X-rays [of “Willo”]. —Tina Hesman, reporting for Science News, April 22, 2000.1
Comments:
Really, it’s a stunner. —Dale. A. Russell
In the old days, this would have just been a hard rock in the way, and I would
have destroyed it. —Michael (Mike) Hammer.
We may have been throwing away the best parts. —Michael K. Stoskopf
The surprise would be that all non-avian dinosaurs were cold-blooded. Reptiles today are all coldblooded
but, as Robert T. (Bob) Bakker has vigorously argued, some dinosaurs have features that
suggest warm-bloodedness or evident lifestyles that do. Some dinosaurs ranged into, or dwelt in,
Pangea’s polar latitudes.2 Small (presumed) dinosaurs early evolved
into flying reptiles (order Pterosaursia), some with “hair” (insulating
protofeathers), and some dinosaurs (infraorder Ceolosaura) had
insulating true-feathers as have warm-blooded birds (class Aves).3
At rest, a warm-blooded (endothermic, homeothermic) animal by
its metabolism maintains a body temperature that is constant and
slightly higher than the maximum environmental temperature. It
cannot tolerate environmental temperatures, even marginally, above
its body temperature for long and will seek relief (inactivity, shade
or a burrow, pant or sweat). When environmental temperatures are
much below its body temperature, a warm-blooded animal has thick
fat or fur or both, or feathers, to insulate its body from rapid heat loss
and hypothermia (core body temperature too cold for normal
muscular and cerebral functions). Shivering can generate body heat.
At rest, a cold-blooded (ectothermic, poikilothermic) animal has a body temperature that is
marginally higher than the environmental temperature. As this, on a hot day in the sun, can exceed
that which warm-blooded animals tolerate, cold-blooded is a misnomer. At the another extreme, some
cold-blooded animals (Jack Layne, mentions six North American frog species, one European lizard,
and a handful of North American turtles)4 can freeze and, when thawed, live on.
As long ago as 1866, Harry Seeley, a young paleontologist known to Huxley, proposed that
Pterosaurs likely were “hot blooded.” Huxley, having noticed bird-like ilia in William Buckland’s
rhinocerine reconstructions of dinosaurs, was permitted in 1867 by John Phillips, their Oxford
curator, to reassemble hadrosaurs as bipedal (as Joseph Leidy had proposed in 1858 for his American
finds). These dinosaurs with chests housing “bird-like heart and lungs,” he suggested were warm
blooded. However, skin impressions of mummified hadrosaurs since found show no sign of feathers
or fur, insulating features that if present would corroborate warm-bloodedness (Figure h15.1).
In the 1980s,5 Armand de Ricqles made the case that the obligate bipedalism (for example, T rex’s
puny arms ruled out it going four footed) of some dinosaurs required a high metabolism for them to
sustain their stance while standing still. Also, the giant brontosaur quadrapeds, as is known from the
trackways they left, kept their tails off the ground (although, in the main tracksite at Dinosaur Valley
State Park, Texas, a lone possible tail drag-impression is seen overprinted at one point by the three
toed track of a following predator), and there is no evidence that they slumped when not walking.
Bones develop from soft cartilage that is replaced by the mineral apatite (calcium phosphate). Bone,
as in the human thighbone (femur) is either, as in the shaft, a solid shell (thickness from two to eight too much isnt it

wow! great work!! im not going to get in this convo im going to sit back watch and learn

Andrewtherium makes a very good point AND he supports it with references and sources. That's the key to a good argument. If one makes an argument with information they read from someone else's work, then they MUST cite the work. And, if it's from a credible and respected researcher who's work is from the 1980s to the Present, then you'll get even farther. I think that there needs to be more of that on this forum.


Although, please do NOT think I'm not proud of ALL the knowledgeable members of this site. I am proud of all of you. I just want to give you all advice that can really help you in the future with Scientific papers and can help you in any field you go into: Paleontology, Physics, Geology, etc.

warm blooded. in Jurassic Park, Alan Grant said quote "it was determined, that for the Apatosaur to be able to pump oxegen through their necks, a 4-chamber, hot blooded heart would be nesisary"

so, like birds, they likely laid eggs, and were warm blooded.

pretty much