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•Fossils of curious creatures living 160million years ago were discovered in rocks beneath the famous Jehol Biota in north eastern China
•They shed light on life in the Middle-Upper Jurassic when birds are believed to have evolved from feathered dinosaurs
•Fossils of a salamander with external gills, the first swimming mammal with a beaver-like tail and early feathered dinosaurs were uncovered
A feathered dinosaur, Epidexipteryx, was found at the site. The inset shows feathers and soft tissues revealed by the use of ultraviolet light
A fossil of the salamander Chunerpeton shows not only the preserved skeleton but also its skin and external gills (pictured) The site in China sheds new light on the array of fauna living 160million years ago
A new study has classified these fossils as belonging to a distinct ecological group, or biota from the famous 130-million-year-old specimens, which include the world's most exquisitely preserved feathered dinosaurs.
The Middle Jurassic fossils date from a time when many important vertebrates including mammals were undergoing evolutionary diversification.
this shocking discovery is once again going to have paleontologists scrambling to find a way to prop up the popular myths that they have been promoting. What they have been telling us simply does not fit the facts. The truth is that this latest find is even more evidence that dinosaurs are far, far younger than we have traditionally been taught.
Once upon a time, scientists believed that it would be impossible to find anything other than the hardened fossilized remains of extinct dinosaurs. And if those dinosaurs really were millions of years old, those scientists would have been 100% correct. But instead, we are now starting to find dinosaur soft tissue all over the place.
In 1991, Schweitzer was trying to study thin slices of bones from a 65-million-year-old T. rex. She was having a hard time getting the slices to stick to a glass slide, so she sought help from a molecular biologist at the university. The biologist, Gayle Callis, happened to take the slides to a veterinary conference, where she set up the ancient samples for others to look at. One of the vets went up to Callis and said, “Do you know you have red blood cells in that bone?” Sure enough, under a microscope, it appeared that the bone was filled with red disks. Later, Schweitzer recalls, “I looked at this and I looked at this and I thought, this can’t be. Red blood cells don’t preserve.”
Schweitzer showed the slide to Horner. “When she first found the red-blood-cell-looking structures, I said, Yep, that’s what they look like,” her mentor recalls. He thought it was possible they were red blood cells, but he gave her some advice: “Now see if you can find some evidence to show that that’s not what they are.”
Of course since that time, many others have also dug up dinosaur soft tissue. At this point, more than thirty specimens have been discovered and tested, and the specimens have come from an impressive array of various dinosaurs…
That is something to think about.
I realize that this article is going to directly challenge things that a lot of people have believed all of their lives.
But we are never going to get anywhere if we just have blind faith in whatever the system tells us to believe.
It pays to question everything and to allow logic and reason to lead us to the truth.
No.
Is it possible that the dino lived more recently than believed? Is it possible that the earth isn't as old as it's said to be?
www.smithsonianmag.com...
Meanwhile, Schweitzer’s research has been hijacked by “young earth” creationists, who insist that dinosaur soft tissue couldn’t possibly survive millions of years. They claim her discoveries support their belief, based on their interpretation of Genesis, that the earth is only a few thousand years old. Of course, it’s not unusual for a paleontologist to differ with creationists. But when creationists misrepresent Schweitzer’s data, she takes it personally: she describes herself as “a complete and total Christian.” On a shelf in her office is a plaque bearing an Old Testament verse: “For I know the plans I have for you,” declares the Lord, “plans to prosper you and not to harm you, plans to give you hope and a future.”
www.natureworldnews.com...
"We know that iron is always present in large quantities when we find well-preserved fossils, and we have found original vascular tissues within the bones of these animals, which would be a very hemoglobin-rich environment after they died," Schweitzer said. "We also know that iron hinders just about every technique we have to detect proteins. So iron looks like it may be both the mechanism for preservation and the reason why we've had problems finding and analyzing proteins that are preserved."
But we are never going to get anywhere if we just have blind faith in whatever the system tells us to believe.
It pays to question everything and to allow logic and reason to lead us to the truth.
The find was also controversial, because scientists had thought proteins that make up soft tissue should degrade in less than 1 million years in the best of conditions. In most cases, microbes feast on a dead animal's soft tissue, destroying it within weeks. The tissue must be something else, perhaps the product of a later bacterial invasion, critics argued.
Then, in 2007, Schweitzer and her colleagues analyzed the chemistry of the T. rex proteins. They found the proteins really did come from dinosaur soft tissue. The tissue was collagen, they reported in the journal Science, and it shared similarities with bird collagen — which makes sense, as modern birds evolved from theropod dinosaurs such as T. rex.
The researchers also analyzed other fossils for the presence of soft tissue, and found it was present in about half of their samples going back to the Jurassic Period, which lasted from 145.5 million to 199.6 million years ago, Schweitzer said.
"The problem is, for 300 years, we thought, 'Well, the organics are all gone, so why should we look for something that's not going to be there?' and nobody looks," she said.
The obvious question, though, was how soft, pliable tissue could survive for millions of years. In a new study published today (Nov. 26) in the journal Proceedings of the Royal Society B: Biological Sciences, Schweitzer thinks she has the answer: Iron.
Iron lady
Iron is an element present in abundance in the body, particularly in the blood, where it is part of the protein that carries oxygen from the lungs to the tissues. Iron is also highly reactive with other molecules, so the body keeps it locked up tight, bound to molecules that prevent it from wreaking havoc on the tissues.
After death, though, iron is let free from its cage. It forms minuscule iron nanoparticles and also generates free radicals, which are highly reactive molecules thought to be involved in aging.
"The free radicals cause proteins and cell membranes to tie in knots," Schweitzer said. "They basically act like formaldehyde."
Formaldehyde, of course, preserves tissue. It works by linking up, or cross-linking, the amino acids that make up proteins, which makes those proteins more resistant to decay.
"The problem is, for 300 years, we thought, 'Well, the organics are all gone, so why should we look for something that's not going to be there?' and nobody looks," she said.
Danbones
yet some dumb old savages were idiots because they belived an a feathered serpant
oh...maybe a thousand years ago
StallionDuck
Is it possible that the dino lived more recently than believed? Is it possible that the earth isn't as old as it's said to be?
Danbones
reply to post by bigfatfurrytexan
somewhere I think i read there is a temple with a stegosaurous or the like carved into it
we are never going to get anywhere if we just have blind faith in whatever the system tells us to believe
Dianec
I'm a little confused - are these findings (this one, the whales, others throughout the past few years such as the mammoth) from opportunities due to ice melt and therefore accessibility or just some lucky drilling and hitting the right spot? Maybe it's a mixture of both due to ground penetrating radar?
Regardless - it's a cool find. The feather thing always amazes me because I always observe pelicans and seagulls with the knowledge of how ancient they are. I know other birds are as ell but these actually look prehistoric to me.
Is it possible that the dino lived more recently than believed? Is it possible that the earth isn't as old as it's said to be?
No.
there have been at least three tentative plans to recreate a mammoth (if you don't count the fact that i suggested this (whole nucleus replacement method) way back when i was in high school.) two involved actual nuclear DNA cloning and one involved a selective breeding scheme for regular elephants to select mammoth traits that are still in the elephant genome. i have not heard updates on this but the latest blip on this in the media that i caught was a year or so ago.
Dianec
reply to post by stormbringer1701
The melt of permafrost would explain the woolly mammoth finds. I was given a couple of dinosaur artifacts from a guy who found some stuff on his land in Ohio. Most of his finds went to a museum but the couple of things that were passed to me intrigue me each time I examine them.
With this finding they may very well try to replicate this animal - perhaps do a Jurassic park thing and attempt to mix this DNA with that of something compatible. I heard they were going to try to do this with a woolly mammoth but am not sure if that was just a rumor. I don't think it's a good idea - if only because we should focus on the animals that are going extinct now and not worry about the ones that have managed to evolve. We can definitely learn a lot though.