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T Rex Soft Tissue Found Preserved
for National Geographic News
March 24, 2005
A Tyrannosaurus rex fossil has yielded what appear to be the only preserved soft tissues ever recovered from a dinosaur. Taken from a 70-million-year-old thighbone, the structures look like the blood vessels, cells, and proteins involved in bone formation.
Most fossils preserve an organism's hard tissues, such as shell or bone. Finding preserved soft tissue is unheard of in a dinosaur-age specimen.
"To my knowledge, preservation to this extent—where you still have original flexibility and transparency—has not been noted in dinosaurs before, so we're pretty excited by the find," said Mary H. Schweitzer, a paleontologist at North Carolina State University in Raleigh.
The findings may provide new insights into dinosaur evolution, physiology, and biochemistry. They could also increase our understanding of extinct life and change how scientists think about the fossilization process.
"Finding these tissues in dinosaurs changes the way we think about fossilization, because our theories of how fossils are preserved don't allow for this [soft-tissue preservation]," Schweitzer said.
Scientists recover T. rex soft tissue
70 million-year-old fossil yields preserved blood vessels
WASHINGTON — March 24, 2005 - For more than a century, the study of dinosaurs has been limited to fossilized bones. Now, researchers have recovered 70 million-year-old soft tissue, including what may be blood vessels and cells, from a Tyrannosaurus rex.
If scientists can isolate proteins from the material, they may be able to learn new details of how dinosaurs lived, said lead researcher Mary Higby Schweitzer of North Carolina State University.
"We're doing a lot of stuff in the lab right now that looks promising," she said in a telephone interview. But, she said, she does not know yet if scientists will be able to isolate dinosaur DNA from the materials.
It was recovered dinosaur DNA — the blueprint for life — that was featured in the fictional recreation of the ancient animals in the book and film "Jurassic Park."
Dinosaur DNA rebuilt from ancient eggs -
Jurassic Park has just taken a giant T-Rex-sized step toward becoming reality after ancient DNA from long-extinct creatures was successfully extracted.
The DNA was taken from creatures such as the 10ft, half tonne elephant bird and successfully extracted from pieces of eggshell, trapped in fossils for thousands of years.
The new technique ‘has major implications in the fields of archaeology, palaeontology, conservation and forensics’, said Australian biologists. ‘We obtained DNA signatures from a variety of fossil eggshells, including the extinct moa, elephant birds and a 19,000-year-old emu,’ said Murdoch University’s Charlotte Oskam.
The researchers used lasers to highlight DNA ‘hotspots’ under a microscope, marking them with fluorescent green dye. ‘We showed that genetic material is preserved in the eggshell matrix and have successfully imaged the DNA via microscopy,’ they said.
Their study, to be published this week, is the first to discover the way to tease out genetic strands from eggshells.
Dinosaur Soft Tissue Sequenced; Similar to Chicken Proteins
for National Geographic News
April 12, 2007
Now, for the first time, scientists have obtained partial protein sequences from the soft tissue remains.
"The sequences are clearly from T. rex," said John Asara of Harvard Medical School in Cambridge, Massachusetts, who led one of the studies.
In addition, both studies found similarities between the dino sample and the bone collagen of chickens, providing molecular support for the hypothesis that modern birds are descended from dinosaurs.
Until now the dino-bird connection has been entirely based on physical similarities in fossils' body structures (related: "Earliest Bird Had Feet Like Dinosaur, Fossil Shows" [December 1, 2005]).
In a related study, a team led by Mary Higby Schweitzer of North Carolina State University conducted tests that also revealed the presence of collagen in the T. rex remains.
In one experiment, antibodies that normally react in the presence of chicken collagen reacted strongly to the dinosaur protein, suggesting a similar molecular identity.
The stones are composed of andesite and vary in size from pebbles to boulders. They are shallowly engraved through their surface patina with a variety of images, purportedly depicting a variety of phenomena:
Incan or Aztec men riding and attacking dinosaurs
surgeons and astronomers performing advanced works
star and land maps
Contradicting extant knowledge of Peruvian prehistory, they are considered prime examples of out-of-place artifacts.
Wednesday, May 06, 2009
NEW SOFT TISSUE
By now we're all familiar with the fresh, unfossilized parts of dino bones that have been discovered recently, and highlighted on this blog.
Since the discovery, creationists have been wondering why the evolulus have been so hesitant to carbon date the bones.
They finally did, and we see just why they have been so afraid. The results came back that the dinos lived less than 100 years ago. Of course we dispute the accuracy of the evolutionary dating methods, but even this shows the dinos didn't live 70 million years ago.
So now they are saying the material was biofilm "slime". Of course that is obviously false from simply looking at the vessels and blood cells (with hemoglobin), coupled with the fact the alleged "slime" was spread uniformly, and not dripping toward the bottom as gravity would cause if it was slime.
Full Story / Blog
Collagen filaments found in another T-rex bone.
Do we believe it is 65 million years old?
In 1995, the museum in New Castle Wyoming gave Joe Taylor a small piece of bone from the hip of a T-rex. This T-rex was found in about 1916. Taylor sent a piece of the bone to California to be electron scanned by professor Mark Armitage at Azusa Pacific College.
Joe just wanted to see if it was bone or muscle. "I held part of the hip girdle of this rex in my lap to examine it. It appeared to have skin on the sacral vertebrae."
After scanning the bone fragment, Armitage reported to Taylor that it was in fact bone...but, there were collagen filaments inside it! He went on to say that, "It can't be but a few thousand years old."
It was mentioned six years ago in the breaking news forum here:
Originally posted by Havick007
Ok so now being 2011, this is kinda old news but i really thought it worth the mention on ATS in the Science forums.