Dinosaurs Breathed Like Birds

[PragmaticGal]

[quote="gurey25"]"Meanwhile, sketchy evidence in recent years had suggested dinosaur bones might contain air cavities. Still, some experts contended dinosaurs breathed more like crocodiles.
"
Air cavities? does that mean they were lighter than we thought.

and guys DD and Pragamticgirl there is something called PM.[/quote]

The air cavities would suggest that the dinos were not that bulky. But I don't think there would be that many cavities per bone, or the skeleton would not support the sheer weight of these behemoths (unlike birds, whose bones are essentially hollow). On the other hand, dinosaurs are incredibly varied, and only a certain subset are the ancestors of birds.

[gurey25]

i suppose the wieght bearing capacity is
offset by the sort of hexagonal structure, like bees nest, in the bones.

[dhuusa_deer]

[quote="PragmaticGal"]I'm done my undergrad studies. Doing my PhD in genetics. What school do you attend? We (our lab) collaborates w/ a few researchers at U of T.[/quote]

Carleton University in Ottawa. I plan to get my masters here in Ottawa at University of Ottawa. I haven't decided where to study for my PhD.

So you're planning to become a prof? I heard they pay really good money at U ot T. Like quarter a million a year, some almost half a million a year.

When studying for your PhD, do you do more research or studies? How long does take?

What field of genetics are you studying? I got really heard, third year genetics course waiting for me this fall. It has no lab component but I've heard too many horror stories.

[PragmaticGal]

DD,

"What field of genetics are you studying?"

Immunogenetics. B cell differentiation and Ig class switching, with a little tumor studies thrown in. I actually didn't major in genetics as an undergrad. The ecol and evol faculty at my alma mater were some of the best in the country (and pretty flattering in their interest in me), but finally settled on cell bio. I love all of bio, and was tempted to study biochem too. Were you pretty firm on your major?

"So you're planning to become a prof?"

You know, funny thing there. I don't really much fancy becoming a prof. It would seem to be a logical progression, but while I love pure research, I can't stand the jockeying for position, the endless paperwork and politicking that comes with being a PI. I don't know what I'll do.

"I heard they pay really good money at U ot T. Like quarter a million a year, some almost half a million a year."

I imagine. I'm not at U of T. I only mentioned it because, in typical American ignorance, I assumed that's where you were studying since you're Canadian. And it's the only Canadian university aside of Montreal's that I am familiar with.

"When studying for your PhD, do you do more research or studies? How long does take?"

Mostly research. The first year I had to take a few general courses, and there are seminar courses throughout the program, but it's pretty research-oriented the last few years. It takes 4-5 to complete a PhD program here, although there are horror stories of it taking 6-8 years. I am in my 2nd year.

Do you have to do your masters, or can you just go straight to PhD in Ontario?

[dhuusa_deer]

PragmaticGal,

"Were you pretty firm on your major?"

Nope. I started with Biology in my first year. Then switched to biochem. Luckly for me I didn't lose any time becuz the first year courses for biochem, biotech, and biology are almost the same. They diverge after 1 year.

"I don't really much fancy becoming a prof."

Me neither. I know you have TAs to assist you with marking exams and help you around with work but from what I heard from profs (some not all, as some like teaching) is that teaching requires alot of your time and takes you away/delays completing projects on time.

"I'm not at U of T.'

Where are u then? You don't have to mention if you don't feel like it. I'll understand.

"It takes 4-5 to complete a PhD program here, although there are horror stories of it taking 6-8 years. I am in my 2nd year."

6-8 years and you're 2nd year, good luck sis

"Do you have to do your masters, or can you just go straight to PhD in Ontario?"

I'm honours student, so I'll only have to do 1.5 year for my Masters. And yes, you have to have your masters to do your PhD.

[couldublvd]

Embryo Studies Show Dinosaurs COULD NOT Have Given Rise To Modern Birds

Such developmental evidence of digit identity conflicts with the theory that modern birds arose from dinosaurs as some paleontologists have claimed since the 1970s. Dinosaurs had "fingers" corresponding to the first, second and third fingers on human hands, and as a result, it is almost impossible to envision how a bird wing could have evolved from a dinosaur hand.
'

That's the view expressed by a team of scientists.
'
Developmental biologists conducted the new studies and wrote the Science article with Dr. Alan Feduccia, professor and chair of biology at UNC-CH. Feduccia has been a strong critic of the belief that dinosaurs gave rise to birds.
'
"The theory that birds descended from dinosaurs has become dogma in the past 20 years or so, and yet a large number of people do not accept it because there are insurmountable problems with that theory," Dr. Feduccia said.
'
First, there is the time problem in that superficially bird-like dinosaurs occurred some 30 million to 80 million years after the earliest known bird, which is 150 million years old."
'
Most of the bird-like dinosaurs were looking at the meteor some 65 million years ago, a reference to the giant meteor believed to have struck the Earth then and killed off all dinosaurs within a short time.
'
Second, flesh-eating dinosaurs thought to have given rise to birds were large earth-bound creatures with heavy balancing tails and short forelimbs. This is absolutely the worse body plan for the evolution of bird flight.
'
Third if one views a chicken skeleton and a dinosaur skeleton through binoculars they appear similar, but close and detailed examination reveals many differences. Theropod dinosaurs, for example, had curved, serrated teeth, but the earliest birds had straight, unserrated peg-like teeth.
'

All dinosaurs had a major joint in the lower jaw that early birds did not. Birds have a reversed rear toe that opposes the front three toes and allows birds to perch. Dinosaurs had no reversed toe. Birds grow a girdle of bone in their chests quite different from dinosaur chests.
The new work involved microscopic examination of early limb development in ostriches, chickens, cormorants, alligators and turtles and comparison of chick fore- and hindlimbs.
'
"Dr. Feduccia and Dr. Burk examined and concluded that we know dinosaurs developed "hands" with digits one, two and three -- which are the same as the thumb, index and middle fingers of humans -- because digits four and five remain as tiny bumps or vestiges on early dinosaur skeletons," "Apparently dinosaurs developed a very specialized, almost unique "hand" for grasping and raking.
'
Some studies of bird embryos, however, show that only digits two, three and four develop, and this creates a new problem," he said. "How do you derive a bird "hand," for example, with digits two, three and four from a dinosaur hand that has only digits one, two and three" The answer is that you can't."
'
Findings from the examination of alligator and turtle embryos were consistent with those of birds, the biologist added.
'
Far more likely is that birds and dinosaurs had a much older common ancestor, the team said. Many superficial similarities between birds and dinosaurs arose because both groups developed body designs for walking upright on two hind legs and began to resemble each other over millions of years.
'
"The dinosaurian origin of birds is based on sloppy science," Feduccia said.
'
"It is a fantasy by which one believes it's possible vicariously to study dinosaurs at the backyard bird feeder."
'
In an accompanying commentary "The Forward March of the Bird-Dinosaur Halted?", Dr. Richard Hinchliffe of the University of Wales said the new report calls into question the dinosaurs-to-birds idea and is a forceful statement of the opposing theory.
'
The developmental evidence a sharp focus which makes it a timely contribution to current debate on bird origins, Dr. Hinchliffe wrote, the world authority on vertebrate limb development. This convincing evidence of 2-3-4 wing digit identity will not be to the liking of ... supporters of a dinosaur origin of birds.
'
For the time being, this important developmental evidence that birds have a 2-3-4 digital formula, unlike the dinosaur 1-2-3, is the most important barrier to belief in the dinosaur-origin orthodoxy.
'
My Dear Samatara Dhugweyn, I hate to break it to you but it is ALL simply the creation of ALLAH(SWT) shawty, as is everything else on this earth including your dirty Hydrogen Sulphide emitting ass!!!! a third year of Biochem. and you think you know something heh?? .... why don't you stick to mastering the kreb's cycle and the electron transport system?? maybe all those negatively charged and Kaafir inclined ions can be discharged via Hydrogen transport right through your Kaafir ass
'
'
By the way how is your cousin Biiqa Nuura???
'
Like Gurey said go to the PM world and continue the shukaansi so that she can tell you how her dykc is longer than yours to your amusement Kaafir ass B-itches

[PragmaticGal]

You idiot. Why don't you finish posting the whole article?

"Even though he argues forcefully against a direct link, Feduccia acknowledges that “this argument may have been blown out of proportion.”
Experts in the field agree that birds and dinosaurs developed from the same class of prehistoric creatures, he said.
“The only question we are arguing about is whether they derived very late in time from a specific group of theropod dinosaurs, the so-called raptors, or are they derived from a common-stem ancestor with dinosaurs? That’s the view that would be bolstered by this paper,” he said."

http://www.msnbc.com/news/118914.asp?cp1=1

[dhuusa_deer]

PragmaticGal,

"You idiot. Why don't you finish posting the whole article?"



I'll post a link that FULLY details the evolution of modern birds from Dinosaurs.

[dhuusa_deer]

Pinocchio aka couldublvd,

Kreb cycle or Citric acid cycle? You haven't study Uni biology/biochem courses, have you? I studied the Kreb cycle in High School. Here in Uni I study it in more details. For example what sort of conversion is from Aconitate to Isocitrate; oxidation, hydration, carboxylation....

But that pales in comparison to what else I study. Like memorizing all the steps of amino acid and protien metabolism.

And no there is no God, he died long time ago.

[couldublvd]

You Kaafir B-itch:

It is no secret it is a Feduccia and company research, You dumb ho !!!what do you want me to do? feed you too?? I am a muslim first and everything else second, and you and your Kaafir brethren Samatara Dhugweyn fail to acknowlegde that ALLAH(SWT) creates all!!!! and even the TRUE atheists argue about the origin of this bird dinosaur argument let alone two skinny, refugees trying to imitate their masters !!! Kaafir foqal Kaafir

[dhuusa_deer]

The evolution of birds from Dinosaurs

Transitional fossil: Archaeopteryx

Link for full detailed info:

http://www.talkorigins.org/faqs/archaeopteryx/info.html

[couldublvd]

Samatara Dhugweyn:
'
You got to be the funniest faggot in this world!!!! mothafucca you are a Kaafir and an amateur, you don't even have a degree!!!! some of us have multiple degrees and haven't paid for it either!!!!! Like I said I am a muslim first and everything else second, when you take the MCATS and have been accepted to over 8 American Med-schools come talk to me then !!!!!
'
'
By the way how is your cousin suura sangala

[PragmaticGal]

What a dumb assh0le. Instead of MISREPRESENTING Kaafir scientists to support your ridiculous ideas about evolution, maybe you could quote Muslim scientists next time.

Oops, "Muslim scientist" is pretty much an oxymoron, though, isn't it?

What do you have degrees in anyway? Dishonest Tactics? Advanced Retardation? Couldyoubuggermeology?

[couldublvd]

Poked B-itch:

you are a fuccin Kaafir, what is there to misrepresent ho? it is an article b-itch!!! I have multiple degrees in how to stick xulbad up your kaafir ass and ku cusbeeyo!!!! the only retard and dishonest smut here is non other than yourself!!! you are retarded to turn to nothing for worship absolutely nothing!!!! how retarded is that??? do you think that your mother in ay ku soo xaartay just like that?? not to mention dishonest to your soul that will surely burn in hell!!!! Kaafir ho go and sukk your 60 year old cracker atheist friend's dyck who has you mentally enslaved by buying you margaritas and sticking you in the ass

[dhuusa_deer]

PragmaticGal,

Don't let Pinocchio aka Couldublvd get to you. Hard to believe but I enjoy reading his responses for amusement.

Pinocchio aka Couldublvd,

Science is for all ppl. You don't have to be student of science or have a science degree to participate in science discussion. Only have to be conversed in the subject.

When did I speak to you about science? Remember you interjected yourself in ongoing discussion with a copy and pasted article that you didn't fully understand. You were caught red handed with and feel embarrassed. To divert the embarrassment you spout emotional trantrums. Grow up.