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Wednesday, February 10, 2016

Were Dinosaurs Warm- or Cold-Blooded?


Way back around 1841 or 1842, Richard Owen coined the term dinosaur, which meant terrible lizard. Well, yes. Those critters often looked like overgrown lizards in some cases. But dogma drives evolutionary science, the prevailing viewpoint is that dinosaurs evolved into birds, birds are warm-blooded, so dinosaurs must have been warm-blooded too. Savvy? Hold your horses, Horatio. Nobody really knows their blood temperature.


Many evolutionists insist that dinosaurs evolved into birds. They have to use bad data to change cold-blooded dinosaurs into warm-blooded, because birds are warm-blooded. This is science?
Crocodile image credit: US National Park Service
Using some cherry-picked data and ignoring inconvenient evidence, some scientists have dubious evidence that dinosaurs were warm-blooded, just like they wanted. Except that things like nasal passages of dinosaurs match up rather well with living cold-blooded reptiles. An analysis of dinosaur bones shows that they were highly vascularized, but the owlhoots ignored the fact that this is not evidence of being warm-blooded. They were created to be cold-blooded, and the evidence supports this when you strip away evolutionary assumptions.
Evolutionary scientists are trying to find evidence that dinosaurs were warm-blooded creatures in order to place them closer to birds on their evolutionary diagrams. According to Dr. Tom Holtz, “Birds are dinosaurs! And because birds live today, dinosaurs never did become extinct.” Does science back this story? Most of the evidence for dinosaurs possessing a bird-like metabolism is misrepresented.

If dinosaurs were birds, they should’ve been endothermic (warm-blooded) like birds today. Endothermic simply means that an animal generates its own internal body heat using its metabolism, independent of its surroundings. Ectothermic (cold-blooded) means that an animal needs an external source of heat, like sunlight, to warm its body, like snakes and lizards do.

Unfortunately, determining whether or not an extinct animal is endothermic or ectothermic is difficult and requires a study of soft-tissue anatomy. Because only small amounts of soft tissue are preserved in dinosaur fossils, we still don’t know for sure if dinosaurs were warm or cold-blooded.
To read the rest, click on "Dinosaurs Designed Cold-Blooded".

 Many evolutionists insist that dinosaurs evolved into birds. They have to use bad data to change cold-blooded dinosaurs into warm-blooded, because birds are warm-blooded. This is science?