Absolute dating, on the other hand is used to calculate the precise age of fossils through radiometric dating. Photograph A shows the demineralized fragment is flexible and resilient and when stretched (arrow) returns to its original shape. In relative dating, fossils are compared to similar fossils and rocks, the ages of which are known. Artwork by Scott Hartman reveals the bone structure of T. rex. The controversial discovery of 68-million-year-old soft tissue from the bones of a Tyrannosaurus rex finally has a physical explanation. According to new research, iron in the dinosaur's body preserved the tissue before it could decay. Category index Havent you seen bicycles, tanks and Model T Fords before?. to explain how it could last tens of millions of years. To determine the ages of these specimens, scientists need an isotope with a very long half-life. Look at how he begs the question: The fossil fuels used daily by society consist of original biomolecules of ancient plants and microorganisms that have been chemically transformed into carbonaceous macromolecules referred to as kerogens (Tissot and Welte, 1984; Tegelaar et al., 1989; Vandenbroucke and Largeau, 2007). Such a find is quite rare, lead researcher Stephen Poropat of Australias Curtin University tells the Guardians Donna Lu. The window between 100 and 95 million years ago was one of the warmest in Earths geologically recent history, meaning that Antarctica, which was more or less where it is now, had no ice, Poropat says in a statement. Numerous collagen triple helices assemble in a staggered fashion to form a larger structure called a collagen fibril. ), Fixatives like formaldehyde keep the tissues from degrading in part, they make them less digestible to bacteria, says Landon Anderson, doctoral candidate at NCState and lead author of a study in Earth Science Reviews. But carbon-14 dating won't work on dinosaur bones. (Remember that 7th grade frog dissection? [19][20] On March 20, 2019 the journal Nature Communications published a paper naming an extinct bird "Avimaia schweitzerae in honor of Mary Higby Schweitzer for her ground-breaking works on MB [ medullary bone ] and for her role in establishing the field of molecular paleontology."[21]. Follow us @livescience, Facebook & Google+. Today's knowledge of fossil ages comes primarily from radiometric dating, also known as radioactive dating. If the fragments were due to contamination, they should have mapped randomly onto all regions of the collagen fibers. Part of HuffPost Science. And Schweitzer has even recovered fragments of the more fragile and complex molecule, DNA. The research, headed by Mary Schweitzer, a molecular paleontologist at North Carolina State University, explains how proteins and possibly even DNA can survive millennia. 15009 Lancaster Highway | Charlotte, NC 28277704-847-5600 |[emailprotected] 2022 | All Rights Reserved, Affiliation, Authorization, & Accreditation, 3 Reasons You Should Consider a Seminary Education, 8 Essential Facts for Effective Christian Apologetics, 24 Questions about Christianity & Social Justice. As the soft tissue in dinosaur bones can be explained readily under the biblical time scale, this supplies a more realistic explanation of the presence of soft tissue in dinosaur bones than the uniformitarian (geologic) time scale. At that time, Australia, Antarctica, New Zealand and South America were all connected in a southern landmass known as Gondwana. Which needs less demystifying? The specimens Schweitzer works with, including skin, show evidence of excellent preservation. This information has also helped determine the age of the Earth itself. Original article on LiveScience. TUESDAY, SEPTEMBER 01, 2009. The big question is, why are the soft tissues still there in dinosaur bones when artificial decay experiments show soft tissues can last thousands of years but not millions of years? The more vulnerable areas of the fibers should break down first, with the most protected ones persisting over timea type of molecular survival of the fittest. Somewhere over the rainbow, my views true; In many cases, they are one and the same.. One of the most provocative pieces of evidence young-earth creationists cite for a 6,000- to 10,000-year-old Earth is the discovery of soft-tissue remains in a dinosaur specimen that dates around 68 million years old. [11] published in PLoS ONE (30 July 2008) challenged the claims that the material found is the soft tissue of Tyrannosaurus. [5], In 2000, Bob Harmon, chief preparator of paleontology at the Museum of the Rockies, discovered a Tyrannosaurus skeleton in the Hell Creek Formation in Montana. "Determining the Age of Rocks and Fossils." In most cases, microbes feast on a dead animal's soft tissue, destroying it within weeks. The iron-removing techniques should allow paleontologists to search more effectively for soft tissue, and to test it when they find it. Nicknamed Ann, the long-necked specimen is just the fourth of the species Diamantinasaurus matildae ever uncovered. Schweitzer and her colleagues found that dinosaur soft tissue is closely associated with iron nanoparticles in both the T. rex and another soft-tissue specimen from Brachylophosaurus canadensis, a type of duck-billed dinosaur. Schweitzer is set to search for more dinosaur soft tissue this summer. News reports around the world tell of red-blood-cell-like and collagen-like structures found in 75 million year-old dinosaur bones long stored in the British Museum. Remember that Mary Schweitzer shocked 60 Minutes host Leslie Stahl and dinosaur paleontologist Jack Horner by showing the tissue was still stretchable. Uniformitarian explanation Sea levels changed gradually over millions of years to produce the enormously thick sequences of sedimentary rocks that record the long history of geological time. Dont be thrown off balance by acronyms (ITMs, KLMs, MLMs, etc.) Based at North Carolina State University, Schweitzer is currently researching Molecular Paleontology, molecular diagenesis and taphonomy, evolution of physiological and reproductive strategies in dinosaurs and their bird descendants, and astrobiology. Schweitzer and her colleagues first raised this question in 2005, when they found the seemingly impossible: soft tissue preserved inside the leg of an adolescent T. rex unearthed in Montana. Researchers estimate Ann was likely about 50 feet from head to tail. For more than a century, the study of dinosaurs has been limited to fossilized bones. A chemical framework for the preservation of fossil vertebrate cells and soft tissues. And in 2015 fibers and cellular structures were discovered preserved in 75 million year old dinosaur specimens. His declaration The author has no relevant financial or non-financial interests to disclose is a half-truth. Scientists can't tell whether the clock ran down a few days or millions of years ago. Terms of Use Dinosaur bones, on the other hand, are millions of years old -- some fossils are billions of years old. The controversial discovery of 68-million-year-old soft tissue from the bones of a Tyrannosaurus rex finally has a physical explanation. Scientists have had two decades to think about soft tissue preservation in dinosaur bones. They seem so fresh that it appears as Chronological index. It sounds pretty mystical to appeal to futureware. Meanwhile, Schweitzer has been testing whether the medullary bone and other soft tissue she discovered are original. (LogOut/ A Brief History of Steamboat Racing in the U.S. Texas-Born Italian Noble Evicted From Her 16th-Century Villa. They also argue that the collagen fragments derive from bacterial proteins with structural homology to collagen. [17], In the developing field of paleoproteomics, Schweitzer has also discovered that iron particles may play a part in the preservation of soft tissue over geologic time. This entry was posted on November 4, 2019 by George Hawke. Radiometric dating relies on the properties of isotopes. Draw the Dinosaur's Face. Scientists have had two decades to think about soft tissue preservation in dinosaur bones. For evolutionists who argue that dinosaurs died about 65 million years ago, it was a startling discovery. When paleontologist Mary Schweitzer found soft tissue in a Tyrannosaurus rex fossil, her discovery raised an obvious question -- how the tissue could have survived so long? Get the latest stories in your inbox every weekday. As shown in Appendix B, this belief is largely due to their naturalistic worldview. Also proteins like collagen, hemoglobin, osteocalcin, actin, and tubulin were found. However, Mary Schweitzer, a molecular paleontologist at North Carolina State University, who headed up the research on the T. rex remains, explained that the soft tissue was able to be preserved by iron in the dinosaurs body, which preserved the tissue before it could decay. Sometimes a dinosaur carcass has been preserved as a natural mummy with widespread skin impressions. Exercise: LAAs paper is open-access. This is a remarkably detailed and information-packed paper, Matthew Lamanna, a paleontologist at the Carnegie Museum of Natural History who was not involved with the new study but helped describe S. musacchioi in 2016, tells Live Sciences Sascha Pare. Rare 95-Million-Year-Old Dinosaur Skull Uncovered in Australia. The half-life of the isotope being measured determines how useful it is at dating very old samples. Even a polymer shield strong enough to resist microbes would develop cracks. The discovery of soft tissue in dinosaur bones was unexpected and scientists have struggled to find a robust explanation. These regions are the most protected within the collagen fiber. You would have to invent a A thigh bone from a 70-million-year-old Tyrannosaurus rex has given fossil experts an unexpected treasure: well-preserved soft tissue. Evidence for the extraction of short segments of ancient DNA from dinosaur fossils has been reported on two occasions. If theropod dinosaurs are the ancestors of birds, one might expect to find evidence of an avian-type lung in such dinosaurs. "I'd like to find a honking big T. rex that's completely articulated that's still in the ground, or something similar," she said. We have seen that the biblical time scale gives a more realistic explanation of the presence of soft tissue in dinosaur bones than the uniformitarian (geologic) time scale. John Morris from the Institute of Creation Research writes: Indeed, it is hard to imagine how soft tissue could have lasted even 5,000 years or so since the Flood of Noahs day when creationists propose the dinosaur was buried. 39 Harvard scientists have confirmed that proteins from the collagen detected in the famous T-Rex (2005) was definitely collagen as determined by sequencing the fraction. Does it render tissue impenetrable to cosmic rays, radon in the soil, or bioturbation? You are also agreeing to our Terms of Service and Privacy Policy. Within the bone matrix, collagen fibers adsorb to the mineral component of bone. That was about 65 million years ago. "Understanding Evolution for Teachers: Radiometric Dating." The extraction of protein, soft tissue, remnant cells and organelle-like structures from dinosaur fossils has been confirmed. These soft tissues are composed mainly of proteins, which are believed to completely degrade within about four million years. Biblical explanation The global flood about 4.5k years ago and associated tectonic activity and volcanism produced enormously thick sequences of sedimentary rocks over a short period of time. In fact, the chemistry from this paper potentially describes preservation for a variety of original cellular tissues, including vertebrates and other organisms trapped within amber, carbonized traces of ancient feathers and skin, and even dinosaur mummies.. Then, in 2007, Schweitzer and her colleagues analyzed the chemistry of the T. rex proteins. He doesnt know that, because he tosses the solution into the futureware bucket. Scientists who had to break a dinosaur bone to remove it from its sandstone location say they have recovered 70-million-year-old soft tissues from inside the bone. Observations on life; particularly spiritual, Being fruitful in work, service & relationships, Six reasons to be skeptical of the geologic time scale. To preserve the chemistry of potential soft tissue, the specimens must not be treated with preservatives or glue, as most fossil bones are, she said. Please copy/paste the following text to properly cite this HowStuffWorks.com article: The oldest fossils, microscopic in nature, were discovered in a 3.5 billion-year-old rock in Western Australia. For one, scientists can now create a loose reconstruction of how the dinosaurs face might have looked. For a scientist committed all his life to Deep Time, stretchable soft tissue is hard for someone like Landon Anderson to accept in bones believed to be tens of millions of years old. Unfortunately, these elements don't exist in dinosaur fossils themselves. Mark Armitage participated in a dig at the Hell Creek Formation, in Montana, a world-famous dinosaur graveyard. Perhaps both the dinosaur tissue and kerogens are young. 2023 BuzzFeed, Inc. All rights reserved. Collagens abundance further explains its presence in dinosaur fossils. The most recent ice age ended about 10k years ago. Do proposed solutions beg the question or toss answers into the futureware bin? No! As remarkable as the discovery of soft tissue in dinosaur fossils seems to be, it cannot be used to argue legitimately for a young earth. According to new research, iron L ast year at about this time, it was disclosed that scientists had made an amazing discovery of a Tyrannosaurus rex thigh bone that still retained well-preserved soft tissue (which included blood vessels and cells). in Communicative Disorders from Utah State University in 1977, and got a Certificate of Secondary Education in Broadfield Science from Montana State University in 1988. The big controversy started here at NC State when Mary Schweitzer posted photos and videos of stretchy tissue inside a T. rex bone in 2004. This Wyoming fossil has upturned the evolutionists Geologic chart to not be so logical anymore. The last step may be the trickiest: Possibly the most controversial part of reconstructing a dinosaur's appearance is determining what, exactly, their faces looked like. If endogenous, putative dinosaur soft tissues should contain diagenetically unstable proteins and phospholipids, vulnerable to hydrolysis, although the released fatty After death, though, iron is let free from its cage. The highly intertwined, cross-linked structure of collagen makes it reasonable that fragments of this molecule could survive for 68 million years. Trace Fossils This review posits a chemical framework describing the persistence of biological soft tissues into deep time. This forced closeness allows for broken strands to occasionally rejoin and reform the original protein. Depending on the depositional conditions and the kind of dinosaur, non-overlapping polygonal scales or feathers may be seen. AiGUSAs Dr. David Menton It was really convincing, says paleontologist Martin Sander of the University of Bonn, Germany. Along with Mary Higby Schweitzer is an American paleontologist at North Carolina State University, who led the groups that discovered the remains of blood cells in dinosaur fossils and later discovered soft tissue remains in the Tyrannosaurus rex specimen MOR 1125,[1][2] as well as evidence that the specimen was a pregnant female when she died.[3]. The flood was followed by an ice age during which there were volcanic and glacial impacts. The fact that the fragments clustered to the most protected areas of the fibers makes better sense if they were generated from dinosaur collagens. WebEvidence for the extraction of short segments of ancient DNA from dinosaur fossils has been reported on two occasions. From the paper by Landon Anderson. In response to these claims, researchers mapped collagen fragments isolated from theT. Yes, proteins do break down into amino acids or peptides that crosslink to form N-heterocyclic polymers. Where they should be three separate bones, these bones have grown together, Carrano said. As the award recipient Schweitzer was the keynote speaker and presented on her research. | READ MORE. Also see: Lots of limestone A chemical framework for the preservation of fossil vertebrate cells and soft tissues (Landon A. Anderson, Earth Science Reviews, May 2023 issue). It forms minuscule iron nanoparticles and also generates free radicals, which are highly reactive molecules thought to be involved in aging. The bulk of the press release distracts attention from the issue of deep time. Only hard parts, like bones and teeth, can become fossils. Are the data driving the paradigm, or vice versa? The soft material was present in pre- and post-decalcified bone. [13] The extraction of protein, soft tissue, remnant cells and organelle-like structures from dinosaur fossils has been confirmed. At the ALS, researchers identified iron particles associated with soft tissues recovered from two Mesozoic dinosaurs. This material may not be published, broadcast, rewritten or redistributed. Change), You are commenting using your Facebook account. Microscopy images of "soft tissues" isolated from bones of the Cretaceous dinosaur Brachylophosaurus canadensis (MOR 2598 and GPDM 328), along with extant Struthio camelus analogs. That study, mentioned by Kevin Anderson in the video clip, reported stretchable tissue and osteocytes present in a Triceratops horn. Think of the nucleus as a pyramid of building blocks. Collagen fibers comprise one of the chief components of connective tissue, are embedded in the bone matrix, and help form blood vessels. Yes. To read the time on this radioactive clock, scientists use a device called a mass spectrometer to measure the number of parent and daughter atoms. In fact, collagen makes up around 25 to 30 percent of all proteins found in animals. And tests seemed to confirm the presence of collagen. Demineralized fragments of tissues lining the marrow cavity of Tyrannosaurus rex femur. We have seen that the biblical time scale All these explanations proposed to explain soft tissue in dinosaur bones are tentative and not robust because they involve historical science in which the results of experiments done over a short period of time (maybe a few years) are applied to a long period of time (thousands and millions of years). [9][10] This means that the soft tissue is about 4.5k years old. Subjects: Scientific Evidence for a Young Earth? Once the protein strand breaks, the fragments are held in close proximity by the contact points. However we have no reason to believe that they were not literal years, genesis is very specific, even to odd numbers. Fossils represent the order of burial during the flood. 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. Amino acid sequencing of several samples have shown matches with the known collagens of chickens, frogs, newts and other animals. Service R F , 2017, I dont care what they say about me: Paleontologist stares down critics in her hunt for dinosaur proteins, Science, Portland, Oregon, 13 Sep, 2017. They admit it exists, but can only make up stories Microscopy images of "soft tissues" isolated from bones of the Cretaceous dinosaur Brachylophosaurus canadensis (MOR 2598 and GPDM 328), along with extant But I wanted to show the chemistry behind these ideas, and that it plausibly explains the soft tissues and cells were seeing in, for example, dinosaurs. Thomas T, 2019, Does the Toast Model explain fossil protein persistence?, Institute for Creation Research. Controversial T. Rex Find Finally Has An Explanation, Copyright 2013 LiveScience, a TechMediaNetwork company. Other techniques include analyzing amino acids and measuring changes in an object's magnetic field. Does he face the objections to the crosslinking hypothesis presented by Dr Kevin Anderson in the link above? Ever since Mary Schweitzer found soft, stretchy tissue in a T. rex fossil in 2004, scientists have been trying to come to grips with how some biological tissues and cells could preserve within ancient critters. But there are a number of different chemical pathways that can result in crosslinking. The last step may be the trickiest: Possibly the most controversial part of reconstructing a dinosaur's appearance is determining what, exactly, their faces looked like. If you try to add extra blocks to the sides pyramid, they may stay put for a while, but they'll eventually fall away. Her work has appeared in theSag Harbor Expressand has aired onWSHU Public Radio. D. matildae,however, was medium-sized, growing to about 65 feet and weighing up to roughly 27 tons (54,000 pounds). Three options present themselves for the presence of molecules and blood vessels in creatures that purportedly passed on eons ago. So they involve huge extrapolations in time. You can't predict when a specific unstable atom, or parent, will decay into a stable atom, or daughter. Soft fibrillar bone tissue was discovered inside the fossil brow horn of a Triceratops horridus. Armitage was fired because of the intellectual intolerance that other scientists felt toward creationists. Since 2004, soft tissue has been discovered in fossils all over the world, spanning the entire Deep Time continuum, as Dr Brian Thomas at ICR has shown. (1/2/2008) http://wrgis.wr.usgs.gov/parks/gtime/ageofearth.html, Special Offer on Antivirus Software From HowStuffWorks and TotalAV Security. Wollemi pine: A living fossil Why was Noahs family saved while the rest died in the flood. 1995: spectroscopy and chemical analyses of extracts from a T. rex femur suggested preserved proteins, including a form of collagen abundant in modern animal bones. Blood vessels, red blood cells, and soft and stretchy ligaments were found in the bone. Armitages attorney said that the state would never have paid such a huge sum unless it was very concerned about losing in court. Red blood cells could be clearly viewed using a thrift store microscope! 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. Yeah, those frogs were preserved via crosslinking with formaldehyde. Before the law suit on this dismissal went to court, CSUN settled, paying compensatory damages, lawyers fees, and money for lost wages. 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. Let him consider seriously the possibility that dinosaur soft tissue is probably only a few thousand years old and watch him get fired real fast. But after several years of debate, its generally agreed that the soft tissue discovered by Mary Schweitzer is authentic. Fossils, however, form in sedimentary rock -- sediment quickly covers a dinosaur's body, and the sediment and the bones gradually turn into rock. But for some people, the discovery raised a different question. This is a world famous area for finding fossil dinosaur remains. But this sediment doesn't typically include the necessary isotopes in measurable amounts. By entering your email and clicking Sign Up, you're agreeing to let us send you customized marketing messages about us and our advertising partners. The resemblances between the skulls of Diamantinasaurus and the similarly aged Sarmientosaurus from southern South America are pretty striking.. The bone was said to be 68 million years old according to the geologic time scale. New Scientist. A more recent study (October 2010) published in PLoS ONE contradicts the conclusion of Kaye and supports Schweitzer's original conclusion. Language links are at the top of the page across from the title. Scientists at Imperial College London have discovered what appear to be the remnants of soft tissue and red blood cells in poorly preserved dinosaur bones dating back 75 million years. 5. Not only is Ann the first Diamantinasaurus uncovered with a mostly preserved skull, but its also the first fossil of the species with a preserved back foot, per the statement. They found the proteins really did come from dinosaur soft tissue. Be especially wary of distractions and sidesteps. Sauropod skulls consist of delicate bones held together by soft tissue and may have been prime targets for predators, Poropat writes in the Conversation. Editor's Note: This article was updated at 2pm Eastern Nov. 28 to correct unclear language about proteins and DNA. Such a thing could hardly happen today, for soft tissue decays rather quickly under any condition. Further, the preservation of biological tissues is a phenomenon known to occur within invertebrate fossils (Stankiewicz et al., 1997; Gupta et al., 2007c; Cody et al., 2011; Ehrlich et al., 2013; Wysokowski et al., 2014). But you can disprove it. The biblical explanation allows for catastrophic events (such as the flood of Noah), whereas the Uniformitarian explanation minimizes the role of catastrophic events (because it has a preference for gradual events). By appealing to the magic of futureware, Landon Andersons statement could be sung to the tune of Somewhere Over the Rainbow.*. The same is true if you take a block away from one of the pyramid's sides, making the rest unstable. "Rock of Ages - Cleft by Laser." The recent discovery of preserved cells and soft tissues in certain dinosaur bones seems incompatible with an They soaked one group of blood vessels in iron-rich liquid made of red blood cells and another group in water. Another alternative is that its not really soft tissue, but even hard-core evolutionists agree thats what it is. Enter your email address to follow this blog and receive notifications of new posts by email. "Geologic Time." "How Do Scientists Determine the Age of Dinosaur Bones?" Two weeks after the results of this research were published, Armitage was terminated from his position as the Manager of the Electron and Confocal Microscopy Laboratory in the Biology Department at California State University Northridge (CSUN). Scientists have also made improvements to the standard radiometric measurements. He put the fossil under his microscope and found unmineralized, undecayed soft tissue. New research from an interdisciplinary team of scientists provides further response to this question by demonstrating how collagens structural features allow fragments to survive for eons.1.
