robert depalma paleontologist 2021

robert depalma paleontologist 2021

The 1960 Valdivia Chile earthquake was the most powerful ever recorded, estimated at magnitude 9.4 to 9.6. Some of the gripes occurred because DePalma first shared his story with a mainstream publication, The New Yorker, instead of a more academic-based journal, said Bored Therapy. To verify the study's claims, paleontologists say that DePalma must broaden access to the site and its material. If Tanis is all it is claimed to be, that debateand many others about this momentous day in Earth's historymay be over. [18], In 2004, DePalma was studying a small site in the well-known Hell Creek Formation, containing numerous layers of thin sediment, creating a geological record of great detail. During and Ahlberg, a member of the Royal Swedish Academy of Sciences, question whether they exist. ", Since Tanis became an excavation site, several other fossils were found, including a pterosaur embryo. Instead, much faster seismic waves from the magnitude 10 11.5 earthquakes[1]:p.8 probably reached the Hell Creek area as soon as ten minutes after the impact, creating seiche waves between 10100m (33328ft) high in the Western Interior Seaway. Paleontologist Robert DePalma, featured in PBS's "Dinosaur Apocalypse," discusses an astonishing trove of fossils. All rights reserved. This program was also aired as "Dinosaur Apocalypse: The Last Day" on PBS Nova starting 11 May 2022.[9][32]. In June 2021, paleontologist Melanie During submitted a manuscript to Nature that she suspected might create a minor scientific sensation. Any water-borne waves would have arrived between 18 and 26 hours later,[1]:p.24 long after the microtektites had already fallen back to earth, and far too late to leave the geological record found at the site. The story of the discoveries is revealed in a new documentary called "Dinosaur Apocalypse," which features naturalist Sir David Attenborough and paleontologist Robert DePalma and airs . By 2013, he was still studying the site, which he named "Tanis" after the ancient Egyptian city of the same name,[5] and had told only three close colleagues about it. Tanis is a rich fossil site that contains a bevy of marine creatures that apparently died in the immediate fallout of the asteroid impact, or the KT extinction. He declined to share details because the investigation is ongoing. [citation needed], At the time of the Chicxulub impact, the present-day North American continent was still forming. And, if they are not forthcoming, there are numerous precedents for the retraction of scholarly articles on that basis alone.. It needs to be explained. Others later pointed out that the reconstructed skeleton includes a bone that really belonged to a turtle; DePalma and his colleagues issued a correction. November 5, 2015. A researcher claims that Robert DePalma published a faulty study in order to get ahead of her own work on the Tanis fossil site. At Tanis, unlike any other known Lagersttte site, it appears freak circumstances allowed for the preservation of exquisite, moment-by-moment details caused by the impact event. Cochran says the format of the isotopic data does not appear unusual. Another question about dinosaurs is what caused their extinction and there are many theories about that, too. According to the Science article, During suspects that DePalma, eager to claim credit for the finding, wanted to scoop herand made up the data to stake his claim.. From the size of the deposits beneath the flood debris, the Tanis River was a "deep and large" river with a point bar that was towards the larger size found in Hell's Creek, suggesting a river tens or hundreds of meters wide. In the BBC documentary, Robert DePalma, a relative of film director Brian De Palma, can be seen sporting an Indiana Jones-style fedora and tan shirt. Her former collaborator Robert DePalma, whom she had listed as second author on the study, published a paper of his own in Scientific Reports reaching essentially the same conclusion, based on an entirely separate data set. [5] The fish were not bottom feeders. This means that the skeletons located there are older than the asteroid that hit the earth, suggesting that some other event, like widespread volcanic eruptions or even climate change, did the dinosaurs in even before the asteroid appeared. The paleontologist believed that this new information further supported the theory that an asteroid killed the dinosaursalong with 75 percent of the animals and plants on Earth 66 million year ago. "I hope this is all legitI'm just not 100% convinced yet," says Thomas Tobin, a geologist at the University of Alabama in Tuscaloosa. Get more great content like this delivered right to you! [1]:p.8 Seiche waves often occur shortly after significant earthquakes, even thousands of miles away, and can be sudden and violent. "It saddens me that folks are so quick to knock a study," he says. [20] The sediment appeared to have liquefied and covered the deposited biota, then quickly solidified, preserving much of the contents in three dimensions. September 20, 2021. Ultimately, both studies, which appeared in print within weeks of each other, were complementary and mutually reinforcing, he says. Help News from Science publish trustworthy, high-impact stories about research and the people who shape it. Both papers studied 66-million-year-old paddlefish jawbones and sturgeon fin spines from Tanis. After his excavations at the Tanis site in North Dakota unearthed a huge trove of fish fossils that were likely blasted by the asteroid impact . Robert DePalma published a study in December 2021 that said the dinosaurs went extinct in the springtime - but a former colleague has alleged that it's based on fake data. Every summer, for the past eight years, paleontologist Robert de Palma and a caravan of colleagues drive 2,257 miles from Boca Raton to the sleepy North Dakota town of Bowman. Robert DePalma: We know there would have been a tremendous air blast from the impact and probably a loud roaring noise accompanied with that similar to standing next to a 747 jet on the runway. Point bars are common in mature or meandering streams. But just one dinosaur bone is discussed in the PNAS studyand it is mentioned in a supplement document rather than in the paper itself. Three papers were published in 2021. In my view, it was an intentional omission which leads me to question the credibility of data. Steve Brusatte, a paleontologist at the University of Edinburgh, says, There is a simple way for the DePalma team to address these concerns, and that is to publish the raw data output from their stable isotope analyses.. American, said in a 2019 tweet that the findings from the site "have met with a good deal of skepticism from the paleontology community." . Robert DePalma is a paleontologist who holds the lease to the Tanis site and controls access to it.. The former Purdue President is now 76 years of age. The fact that spherules were found in the fishes gills suggested the animals died in the minutes to hours after the impact. Discoveries shed new light on the day the dinosaurs died. Robert DePalma, a paleontologist at the Palm Beach Museum of Natural History and a graduate student at the University of Kansas, works at a fossil site in North Dakota. He says he did so because the isotopic data had been supplied as a non-digital data set by a collaborator, archaeologist Curtis McKinney of Miami Dade College, who died in 2017. In turn, the fish remains revealed the season their lives endedergo, the precise timing of the devastating asteroid strike to the Yucatn Peninsula. At his suggestion, she wrote a formal letter to Scientific Reports. . Robert DePalma r son till tandkirurgen Robert De Plama Sr i Delray Beach. If not, well, fraud is on the table.. DePalma holds the lease to the Tanis site, which sits on private land, and controls access to it. By looking through this window into the past, we can apply these lessons to today. Astonishment, skepticism greet fossils claimed to record dinosaur-killing asteroid impact. Plus, tektites, pieces of natural glass formed by a meteor's impact, were scattered amid the soil. It can be divided into two layers, a bottom layer about 0.5m thick ("unit 1"), and a top layer about 0.8m thick (unit 2), capped by a 1 2cm layer of impactite tonstein that is indistinguishable from other dual layered KPg impact ejection materials found in Hells Creek, and finally a layer around 6cm thick of plant remains. (DePalma and colleagues published a paper in the Proceedings of the National Academy of Sciences in 2019 that described finding these spherules in different samples analyzed at another facility.). DePalma may also flout some norms of paleontology, according to The New Yorker, by retaining rights to control his specimens even after they have been incorporated into university and museum collections. What we do know is that during the Jurassic period, great global upheaval occurred with increases in temperature, surging sea levels, and less humidity. Study leader Robert DePalma conducts field research at the Tanis site. . The iridium-enriched CretaceousPaleogene boundary, which separates the Cretaceous from the Cenozoic, is distinctly visible as a discontinuous thin marker above and occasionally within the formation. 03/30/2022. We're seeing mass die-offs of animals and biomes that are being put through very stressful situations worldwide. 2023 American Association for the Advancement of Science. Douglas Preston's writing about the discovery lauds it as one of the . Subscribe to News from Science for full access to breaking news and analysis on research and science policy. Traduzioni in contesto per "i paleontologi che" in italiano-inglese da Reverso Context: Ma i paleontologi che studiano dettagliatamente i denti fossilizzati di questi animali hanno sospettato che non erano quello semplice. The death scene from within an hour of the impact has been excavated at an unprecedented . They seem to have left the raw data out of the manuscript deliberately, he says. Geologists have theorized that the impact, near what is now the town of Chicxulub on Mexico's Yucatn Peninsula, played a role in the mass extinction at the end of the Cretaceous period, when all the dinosaurs (except birds) and much other life on Earth vanished. However, because it is rare in any case for animals and plants to be fossilized, the fossil record leaves some major questions unanswered. And mass spectrometry revealed the paddlefishs fin bones had elevated levels of carbon-13, an isotope that is more abundant in modern paddlefishand presumably their closely related ancient relativesduring spring, when they eat more zooplankton rich in carbon-13. [1]:p.8 Instead, the initial papers on Tanis conclude that much faster earthquake waves, the primary waves travelling through rock at about 5km/s (11,000mph),[1]:p.8 probably reached Hell Creek within six minutes, and quickly caused massive water surges known as seiches in the shallow waters close to Tanis. A newly discovered winged raptor may have belonged to a lineage of dinosaurs that grew large after . The email, which came after Science started to inquire about the case, says their concerns remain under investigation. She also removed DePalma as an author from her own manuscript, then under review at Nature. [31][18], A BBC documentary on Tanis, titled Dinosaurs: The Final Day, with Sir David Attenborough, was broadcast on 15 April 2022. The deposit itself is about 1.3m thick, sharply overlaying the point bar, in a drape-like manner. We may earn a commission from links on this page. He did send Science a document containing what he says are McKinneys data. Such Konservat-Lagersttten are rare because they require special depositional circumstances. December 10, 2021 Source: . The paleontologist believed that this new information further supported the theory that an asteroid . "Outcrops like [this] are the reasons many of us are drawn to geology," says David Kring, a geologist at the Lunar and Planetary Institute in Houston, Texas, who wasn't a member of the research team. Your tax-deductible contribution plays a critical role in sustaining this effort. [5] Secrecy about Tanis was maintained until disclosed by DePalma and co-author Jan Smit in two short summary papers presented in October 2017,[2][3] which remained the only public information before widespread media coverage of the full prepublication paper on 29 March 2019. [10][11] The impactor tore through the earth's crust, creating huge earthquakes, giant waves, and a crater 180 kilometers (112mi) wide, and blasted aloft trillions of tons of dust, debris, and climate-changing sulfates from the gypsum seabed, and it may have created firestorms worldwide. The events at Tanis occurred far too soon after impact to be caused by the megatsunamis expected from any large impact near large bodies of water. Melanie During suspects Robert DePalma wanted to claim credit for identifying the dinosaur-killing asteroids season of impact and fabricated data in order to be able to publish a paper before she did. For the archaeological site in Egypt, see, PNAS paper published in 2019: Prepublication and authorship, Last edited on 25 February 2023, at 16:30, CretaceousPaleogene ("K-Pg" or "K-T") extinction event, "A seismically induced onshore surge deposit at the KPg boundary, North Dakota", Life after impact: A remarkable mammal burrow from the Chicxulub aftermath in the Hell Creek Formation, North Dakota, Tanis, a mixed marine-continental event deposit at the KPG Boundary in North Dakota caused by a seiche triggered by seismic waves of the Chicxulub Impact, "A Blast from the Past: Geochemical Identity of the Chicxulub Bolide and Immediate Effects of the Impact, recorded at Tanis, North Dakota", "Tanis: Fossil of dinosaur killed in asteroid strike found, scientists claim", "International Consensus Link Between Asteroid Impact and Mass Extinction Is Rock Solid", "The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary", "National Natural Landmarks National Natural Landmarks (U.S. National Park Service)", "Fossil site is first ever to show deaths from mass extinction asteroid impact", "Paleontologist accused of faking data in dino-killing asteroid paper", "Stunning discovery offers glimpse of minutes following 'dinosaur-killer' Chicxulub impact", "Google News search 'Robert DePalma fossil' before 2019-03-28", "Incredible fossil find may be first victims of dino-killer asteroid", "Google News search 'Robert DePalma fossil' 27-03 to 2903 2019", Robert DePalma voice interview with Jason Spiess on the 'Crude Life Content Network' channel, "Robert DEPALMA | Postgraduate Researcher | the University of Manchester, Manchester | Department of Earth and Environmental Sciences", "Impaled turtle reveals new insight on the day the dinosaurs died", "A Turtle from the Tanis KPG Mass-Death Assemblage: Further Evidence for Circum-Riparian Disruption by a Massive Chicxulub Impact-Triggered Surge", "Seasonal calibration of the end-cretaceous Chicxulub impact event", "The Mesozoic terminated in boreal spring", A seismically induced onshore surge deposit at the KPg boundary, North Dakota (2019), Supporting material and analysis for above paper (2019), https://en.wikipedia.org/w/index.php?title=Tanis_(fossil_site)&oldid=1141547888, animals and plant material preserved in three-dimensional detail and at times upright, rather than pressed flat as usual, their remains thrown together by the massive wave movements, millions of "near perfect" primary (that is, not, large primitive feathers 3040cm long with 3.5mm quills, broken remains from almost all known Hell Creek dinosaur groups, fossils of hatchlings and intact eggs with embryo fossils, "the fluctuating, reticulated terminal-Cretaceous shoreline was not far away from the Tanis region", "The Event Deposit is a 1.3-m-thick bed that shows an overall grading upward from coarse sand to fine silt/clay and is associated with a deeply incised, large meandering river [and] sharply overlies the aggrading surface of a point bar", "the point bar exhibits 10.5 m of isochronous elevation change along its inclined surface and its width extends <50 m perpendicular to (ancient) flow direction. With Gizmodos Molly Taft | Techmodo. But others question DePalma's interpretations. He says the reviewers for the higher-profile journal made requests that were unreasonable for a paper that simply outlines the discovery and initial analysis of Tanis. If they can provide the raw data, its just a sloppy paper. Underneath a freshwater paddlefish skeleton, a mosasaur tooth appeared. Manning confirms rumors that the study was initially submitted to a journal with a higher impact factor before it was accepted at PNAS. DePalma submitted his own paper to Scientific Reports in late August 2021, with an entirely different team of authors, including his Ph.D. supervisor at the University of Manchester, Phillip Manning. In a recent article in The New Yorker, author Douglas Preston recounts his experience with paleontologist Robert DePalma, who uncovered some of the first evidence to settle these debates. Over the next 2 years, During says she made repeated attempts to discuss authorship with DePalma, but he declined to join her paper. While DePalma corrected his claim, his reputation still took a hit. In the comment, During, her co-author Dennis Voeten, and her supervisor Per Ahlberg highlight anomalies in the other teams isotope analysis, a dearth of primary data, insufficiently described methods, and the fact that DePalmas team didnt specify the lab where the analyses were performed. "After a while, we decided it wasn't a good route to go down," he says. Even as a child, DePalma wondered what the Cretaceous was like. Michael Price is associatenews editor for Science, primarily covering anthropology, archaeology, and human evolution. [1]:p.8, Although Tanis and Chicxulub were connected by the remaining Interior Seaway, the massive water waves from the impact area were probably not responsible for the deposits at Tanis. It is not even clear whether the massive waves were able to traverse the entire Interior Seaway. The Chicxulub impact is believed to have triggered earthquakes estimated at magnitude 10 11.5,[1]:p.8 releasing up to 4000 times the energy of the Tohoku quake.Note 1 Co-author Mark Richards, a professor of earth sciences focusing on dynamic earth crust processes[16] suggests that the resulting seiche waves would have been approximately 10100m (33328ft) high in the Western Interior Seaway near Tanis[1]:p.8 and credibly, could have created the 10 11 m (33 36 feet) high water movements evidenced inland at the site; the time taken by the seismic waves to reach the region and cause earthquakes almost exactly matched the flight time of the microtektites found at the site. [8] Following suspicions of manipulating data, a complained was lodged against DePalma with the University of Manchester. Additional fossils, including this beautifully preserved fish tail, have been found at the Tanis site in North Dakota. After The New Yorker published "The Day the Dinosaurs Died," which details the discovery of a fossil site in Hell's Creek, North Dakota, by Robert DePalma a Kansas State PhD student and paleontologist, debates and discussions across the country arose over the article. This is not a case of he said, she said. This is also not a case of stealing someones ideas. In the caravan are microscopes . With David Attenborough, Robert DePalma, Phillip Manning. This directly applies to today. Perhaps no animal, living or dead, has captivated the world in the way that dinosaurs have. The site was originally discovered in 2008 by University of North Georgia Professor Steve Nicklas and field paleontologist Rob Sula. Subscribe to News from Science for full access to breaking news and analysis on research and science policy. Some scientists were not happy with this proposal. DePalma also acknowledged that the manual transcription process resulted in some regrettable instances in which data points drifted from the correct values, but none of these examples changed the overall geometry of the plotted lines or affected their interpretation. McKinneys non-digital data set, he says, is viable for research work and remains within normal tolerances for usage.. Paleontologist Robert DePalma believes he has found evidence of the first minutes to hours of that catastrophic event. Raising the Bar: Chocolate's History, Art, and Taste With Sophia Contreras Rea Robert DePalma, a paleontologist at the Palm Beach Museum of Natural History and a graduate student at the University of Kansas, works at a fossil site in North Dakota. He says his team came up with the idea of using fossils isotopic signals to hunt for evidence of the asteroid impacts season long ago, and During adopted it after learning about it during her Tanis visita notion During rejects. Your tax-deductible contribution plays a critical role in sustaining this effort. The site, dubbed "Tanis," first underwent excavation in 2012, with DePalma and his team digging along a section known as the Hell Creek Formation (via Boredom Therapy). The bottom line is that this case will just involve bluster and smoke-blowing until the authors produce a primary record of their lab work, adds John Eiler, a geochemist and isotope analysis expert at the California Institute of Technology. Some recent examples include the 1964 Alaskan earthquake (seiches in Puerto Rico),[14] the 1950 Assam-Tibet earthquake (India/China) (seiches in England and Norway), the 2010 Chile earthquake (seiches in Louisiana). [12] It marked the end of the Cretaceous period and the Mesozoic Era, opening the Cenozoic Era that continues today. Help News from Science publish trustworthy, high-impact stories about research and the people who shape it. The exceptional nature of the findings and conclusions have led some scientists to await further scrutiny by the scientific community before agreeing that the discoveries at Tanis have been correctly understood.

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