birds
...E Accurate date for this new hadrosaur!! Personally, that find ( Arenysaurus ardevoli ) just killed twon birds....wait! Since, birds=theropods....Forget that last one. lol! Well, Lola, let's jus...
...Allosaurus family tree
It was less related to Coelurosaurs such as Tyrannosaurus, Compsognathus, and birds.
And further back Allosaurus was of course related to all theropods, including Coelophys...
This is not an assumption. Only birds have feathers. No other animals have ever been found with them. No feathered pterosaur has ever been found.
Pterosaurs are not closely related to birds accord...
...eptiles and they have no problem digesting food at low temperatures. It appears that the enantiornithine birds, which were the dominant land birds, were also ectothermic since they have characteristic...
...uropods gave live birth (If possible, which I HIGHLY doubt!). In fact, their physiology is more akin to birds, though not as much as the Theropoda. Even then, bird physiology isn't nearly close ...
... well mention my own (unprofessional) view on this.
Namely that the transition into flying dinosaurs (birds) and the fact that they live among us today is one of the most amazing insights paleontol...
www.msnbc.msn.com said :
Whether birds first evolved flight as ground dwellers or took to the skies from trees has been a longstanding debate.
A new study of an ancient four-legged creature c...
...tic reptiles may have become extinct when the vast, shallow, epicontinental seaways dried up. The diving birds that are associated with these seaways also became extinct in the Cretaceous. See Feducci...
...ystem.
Females of the small coelurosaurian theropod genus _Troodon_ had dual oviducts (like some non-birds), but their egg sizes were of the same egg-to-body-mass proportion as egg sizes of living...
...ich bolsters the bird-dino connection, as it exhibits characteristics associated with both dinosaurs and birds.
According to a report in Discovery News, the researchers found a long-legged, toothy,...
...ground and in the oceans. But surprisingly some lineages seem less affected than others, including fish, birds and mammals.
Jim is right in his question; some avian dinosaurs such the enantiornithi...
You have a point that the peaks of mountains are not ideal for fossil preservation, but what about mountain lakes, mountain meadows, mountain valleys and mountain streams at lower elevations than the ...
...and youll see Dimetrodon was a scaly, cool blooded mammal/also crocs and their guts compared to guts+ of birds and snakes/lizards/turtles makes crocs look like coldblooded birds on the inside-sorry fo...
I have the feeling that not all dinosaurs evolved into birds.
so, like birds, they likely laid eggs, and were warm blooded.
...een around for 230 million years and have adapted to a vast number of environments. Even if we disregard birds (some of whom thrive in the middle of the Atlantic Ocean, under water, or in the snow of ...
... that the bones show much for the direction of heat flow.
Well if I take your logic a bit further, birds and croc's have four chambered hearts. That would mean that we could carry the trait...
watch the birds, seem to be getting bigger and more aggressive, Nature may do it for us.
...ng for these bugs in the bark. So in reality the bug is killing the tree. You notice there are no song birds in the area because there is a farmer putting genetically modified crops that bugs hate n...
... his analysis by including the extremely important character feathers. It is found in Longisquama and in birds, but not in any other animal, including pterosaurs. Further, pterosaurs are also converge...
Asexually? Possilbly, but...very unlikely. Reptiles and birds reproduce sexually. That's as far as I'm going to in this discussion. Besides, Stegosaur sex will remain a mystery!
...m the rest of your response, you seem to have made up your mind that there was no K/T disaster, even for birds, and that some gradualist explanation is more plausible. Well, even some gradualist holdo...
This would have affected endothermic creatures (mammals, birds) more than ectotherms (presumably dinosaurs & co.). But while dinosaurs and almost all birds were wiped out, mammals seem to have pas...
Random Scientist Inc. wrote:
causing every single dinosaur to die.
..except birds
...he youngs in the first week after hatching, but if they stick around too long, she will try to eat them. Birds on the other hand feed their chicks and care for them long after they...
One of our cats tries to mimick birds to draw them towards the patio door screen. It's a funny sound and she doesn't sound anything like a real bird but she's trying.
...dinosaurs, ichtyosaurs etc. were cold-bloded? If they were warm-bloded the absence of insulation (unlike birds and mammals) could be an explanation....
...ind that just because the Longisquama had what appears to be feathers does not mean that some species of birds did not evolve from dinos
Discovery article on the Longiquama: http://www.discovery....
: been fed upon primarily by nesting carrion birds.
There is an extended discussion of this issue in the recent book by Connie Barlow: The Ghosts of Evolution: Nonsensical fruit, missingf partners...
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