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but that does not mean they were warm blooded.
If walking and running burned more energy than a cold-blooded physiology can supply, these dinosaurs were probably warm-blooded.
based on the energy they consumed when moving, many dinosaurs were probably endothermic, athletic animals because their energy requirements during walking and running were too high for cold-blooded animals to produce.
Originally posted by TheWorldSpins
reply to post by Nicolas Flamel
The four wings look terribly awkward. It's so cool how things can be preserved for later generations. This is very cooll, makes me thing of Jurassic Park
Originally posted by restlessbrainsyndrome
reply to post by Nicolas Flamel
japan is (or was before being rocked with that earthquake) working on cloning the mammoth...
Dinosaur : any of a group (Dinosauria) of extinct often very large chiefly terrestrial carnivorous or herbivorous reptiles of the Mesozoic era
feathers known as protofeathers....... likely........ belonged to theropods
Some paleontologists are saying the protofeathers........... may have been............. used to keep the animals warm. This..............could............ prove feathers evolved first for protection and flight evolved later.
noticed that some of the feathers resemble those found on modern birds, complete with barbs sporting tiny Velcro-like hooks that lock onto adjacent barbs to create a sturdy flight surface. Some of these fragments likely came from a flight-capable bird.
Yeah, because there wasn't anyone around with our modern day weapons, lol. How would it be risky today?
Originally posted by Nicolas Flamel
Bringing back some of these animals to life would be very risky for us. Dinosaurs were successful for 165 million years for a reason.
Originally posted by ACTS 2:38
The previous statement is the wonder child of the evolutionist as since they said it here it is proof.
Reptiles and birds are completely different in every way.
Cold blooded---warm blooded. Scales----feathers solid bones----hollow bones,
heart rates. ect. ect.
Even stranger, some scientists, rightly or wrongly, are "activating" dormant dinosaur genes in living birds like chickens. They got them to grow teeth for example:
Originally posted by gort51
Lets hope with more of this information discovered, that the Myth that Dinosaurs were Reptiles, can be put to rest once and for all.
Crocodiles and lizards are not Dinosuars!!.
Masiakasaurus was a small predatory theropod dinosaur from the Late Cretaceous of Madagascar. It was named in 2001 by Scott D. Sampson, Matthew Carrano, and Catherine A. Forster. Unlike most theropods, the front teeth of Masiakasaurus projected forward instead of straight down. This unique dentition suggests that Masiakasaurus had a specialized diet, perhaps including fish and other small prey. Other bones of the skeleton indicate that Masiakasaurus was bipedal, with much shorter forelimbs than hindlimbs. Masiakasaurus had an estimated adult body length of around 2 meters (about 6–7 feet).
Unlike the skulls of abelisaurids, which are very deep, the skull of Masiakasaurus is long and low. The lacrimal and postorbital bones around the eye are textured with bumpy projections. Not including the highly modified jaws and teeth, the skull of Masiakasaurus possesses many general ceratosaurian characteristics. Overall, its morphology is intermediate between abelisaurids and more basal ceratosaurs.
The neck is relatively narrow in comparison to abelisaurids. While many theropods have s-shaped necks, the back of the neck of Masiakasaurus is positioned almost horizontally, giving it a slighter curve. Like those of other abelisauroids, the vertebrae are heavily pneumaticized, or hollowed, and have relatively short neural spines. Pneumaticity is limited to the neck and foremost back vertebrae, however. Pneumatic cavities are also present in the braincase.
Abelisauridae (meaning "Abel's lizards") is a family (or clade) of ceratosaurian theropod dinosaurs.
Ceratosaurs are members of a group of theropod dinosaurs defined as all theropods sharing a more recent common ancestry with Ceratosaurus than with birds.
By definition the title is misleading and wrong as reptiles have never had feathers
"The dinosaurs appeared to be even more active than the mammals. We certainly didn't expect to see that. These results provide additional weight to theories that dinosaurs were warm-blooded and highly active creatures, rather than cold-blooded and sluggish."
No one can prove that from any set of fossilized bones that they are different from their parent and whether or not the organism was worth of procreation.
Originally posted by camouflaged
Originally posted by marsbeatsmoon
I think it was higher oxygen levels that made dinosaurs bigger, not gravity.
then is it possible humans once might have been giants?