robert depalma paleontologist 2021 robert depalma paleontologist 2021

In December 2021, a team of paleontologists published data suggesting that the asteroid impact that ended the reign of dinosaurs could be pinned down to a season springtime, 66 million years agothanks to an analysis of fossilized fish remains at a famous site in North . Numerous famous fossils of plants and animals, including many types of dinosaur fossils, have been discovered there. Some scientists say this destroyed the dinosaurs; others believe they thrived during the period. What's potentially so special about this site? 01/05/2021. Also, there is little evidence on the detailed effects of the event on Earth and its biosphere. A fossil site in North Dakota records a stunningly detailed picture of the devastation minutes after an asteroid slammed into Earth about 66 million years ago, a group of paleontologists argue in a paper due out this week. He reportedly helps fund his fieldwork by selling replicas of his finds to private collectors. Some scientists question Robert DePalma's methods. 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. DePalma and his group knew the creature could not have survived in North Dakota's fresh waters during the prehistoric age. Tanis is part of the heavily studied Hell Creek Formation, a group of rocks spanning four states in North America renowned for many significant fossil discoveries from the Upper Cretaceous and lower Paleocene. Such a conclusion might provide the best evidence yet that at least some dinosaurs were alive to witness the asteroid impact. But no one has found direct evidence of its lethal effects. 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. All of these factors seemed strange and confused the paleontologists. Petrified fish with glass spheres, called ejecta, were also at the site. Since 2012, paleontologist Robert DePalma has been excavating a site in North Dakota that he thinks is "an incredible and unprecedented discovery". The nerds travel to the final day of the dinosaurs reign with paleontologist Robert DePalma and the legendary Tanis Site. Nicklas also indicates that "in 2012 we decided to try to find an academic paleontologist who had the necessary interest, time, and the ability to excavate the site A good friend of ours, Ronnie Frithiof, recommended Robert DePalma. Her mentor there, paleontologist Jan Smit, introduced her to DePalma, at the time a graduate student at the University of Kansas, Lawrence. Help News from Science publish trustworthy, high-impact stories about research and the people who shape it. Get more great content like this delivered right to you! Han var redan som barn fascinerad av ben. In the early 1980s, the discovery of a clay layer rich in iridium, an element found in meteorites, at the very end of the rock record of the Cretaceous at sites around the world led researchers to link an asteroid to the End Cretaceous mass extinction. She and her supervisor, UU paleontologist Per Ahlberg, have shared their concerns with Science, and on 3 December, During posted a statement on the journal feedback website PubPeer claiming, we are compelled to ask whether the data [in the DePalma et al. Science and AAAS are working tirelessly to provide credible, evidence-based information on the latest scientific research and policy, with extensive free coverage of the pandemic. [5] Analysis of early samples showed that the microtektites at Tanis were almost identical to those found at the Mexican impact site, and were likely to be primary deposits (directly from the impact) and not reworked (moved from their original location by later geological processes).[1]. Robert DePalma made headlines again in 2021 with the discovery of a leg from a . [25] The last was published in December in Scientific Reports. Last modified on Fri 8 Apr 2022 11.20 EDT. Still, when During submitted her manuscript to Nature on 22 June 2021, she listed DePalma as the studys second author. 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.. The end-Cretaceous Chicxulub impact triggered Earth's last mass-extinction, extinguishing ~ 75% of species diversity and facilitating a global ecological shift to mammal-dominated biomes. Robert DEPALMA, Postgraduate Researcher | Cited by 253 | of The University of Manchester, Manchester | Read 18 publications | Contact Robert DEPALMA The study of these creatures is limited to the fossils they left behind and those provide an incomplete picture. This is not a case of he said, she said. This is also not a case of stealing someones ideas. Dont yet have access? Robert DePalmashown here giving a talk at NASA's Goddard Space Flight Center in Aprilpublished a paper in December 2021 showing the asteroid that killed the dinosaurs struck Earth in the spring. 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. An imagined dinosaur scene just after the asteroid strike that caused a mass extinction, from . A version of this story appeared in Science, Vol 378, Issue 6625. The site, after all, does not conclusively prove that the asteroid's impact actually caused the dinosaurs' demise, reported Science. Last month, During published a comment on PubPeer alleging that the data in DePalmas paper may be fabricated. 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. Artist's rendering of a large asteroid hitting Earth. Manning confirms rumors that the study was initially submitted to a journal with a higher impact factor before it was accepted at PNAS. Th When the dino-killing asteroid struck Earth, shock waves would have caused a massive water surge in the shallows, researchers say, depositing sedimentary layers that entombed plants and animals killed in the event. [1]:Fig.1 and p.9181-8192 Although other flooding is evidenced in Hells Creek, the Tanis deposit does not appear to relate to any other Marine transgression (inland shoreline movement) known to have taken place. [1]:pg.11 Key findings were presented in two conference papers in October 2017. That "disconnect" bothers Steve Brusatte, a paleontologist at the University of Edinburgh. In December 2021, a team of paleontologists published data suggesting that the asteroid impact that ended the reign of dinosaurs could be pinned down to a seasonspringtime, 66 million years agothanks to an analysis of fossilized fish remains at a famous site in North Dakota. Mr. Frithiof was able to broker an agreement between Paleo Prospectors and DePalma. These dimensions are in the upper size range for point bars in the Hell Creek Formation and compare favorably with modern rivers with large channels that are tens to hundreds of meters wide", "[The Event flood deposits are] indicative of a westward or inland flow direction that is opposite of the natural (ancient) current of the Tanis River", "[The] Event Deposit is restricted to (an ancient) river valley and is conspicuously absent from the adjacent floodplains. Does fossil site record dino-killing impact? Episode #52: Your Mother Was a Vetulicolian and Your Father Smelt of Elderberries with Henry Gee . Paleontologist accused of faking data in dino-killing asteroid paper. While DePalma corrected his claim, his reputation still took a hit. Robert has been an Adjunct Professor in the Geosciences . [8] Following suspicions of manipulating data, a complained was lodged against DePalma with the University of Manchester. Vid fyra rs lder fick han p ett museum . Tanis is the only known site in the Hell Creek Formation where such conditions were met, [so] the deposit attests to the exceptional nature of the [Event]. There is still much unknown about these prehistoric animals. Some scientists were not happy with this proposal. Now, Robert DePalma, a paleontologist at the Palm Beach Museum of Natural History and a graduate student at the University of Kansas, claims to have unveiled an unprecedented time capsule of this . We're seeing mass die-offs of animals and biomes that are being put through very stressful situations worldwide. [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. View Obituary & Service Information How to Know If the Heat Is Making You Sick. The first documents a turtle fossil found at Tanis, killed by impalement by a tree branch, and found in the upper of two units of surge deposit, bracketed by ejecta. [1] Simultaneous media disclosure had been intended via the New Yorker, but the magazine learned that a rival newspaper had heard about the story, and asked permission to publish early to avoid being scooped by waiting until the paper was published. Such Konservat-Lagersttten are rare because they require special depositional circumstances. posted a statement on the journal feedback website PubPeer, a document containing what he says are McKinneys data, Earliest evidence of horseback riding found in eastern cowboys, Funding woes force 500 Women Scientists to scale back operations, Lawmakers offer contrasting views on how to compete with China in science, U.K. scientists hope to regain access to EU grants after Northern Ireland deal, Astronomers stumble in diplomatic push to protect the night sky, Satellites spoiling more and more Hubble images, Pablo Neruda was poisoned to death, a new forensic report suggests, Europes well-preserved bog bodies surrender their secrets, Teens leukemia goes into remission after experimental gene-editing therapy, Paleontologist accused of fraud in paper on dino-killing asteroid, Scientist-Consultants Accuse OSI of Missing the Pattern, Journal will not retract influential paper by botanist accused of plagiarism and fraud. Please make a tax-deductible gift today. 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). High-resolution x-rays revealed this paddlefish fossil from Tanis, a site in North Dakota, contained bits of glassy debris deposited shortly after the dinosaur-killing asteroid impact. Notably, the powerful magnitude 9.0 9.1 Thoku earthquake in 2011, slower secondary waves traveled over 8,000km (5,000mi) in less than 30 minutes to cause seiches around 1.51.8m (4.95.9ft) high in Norway. UW News staff. During described the findings in her 2018 masters thesis, a copy of which she shared with DePalma in February 2019. Paleontologist Jack Horner, who had to revise his theory that the T. rex was solely a scavenger based on a previous finding from DePalma, told the New Yorker he didn't remember who DePalma was . ^Note 2 If two earthquakes have moment magnitudes M1 and M2, then the energy released by the second earthquake is about 101.5 x (M2 M1) times as much at the first. When asked for more information on the situation on January 3, a spokesperson for Scientific Reports said there were no updates. 2 / 4: Robert A. DePalma, a paleontologist at the Palm Beach Museum of Natural History and a graduate student at the University of Kansas. [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. Robert A. DePalma, a paleontologist at the Palm Beach Museum of Natural History and a graduate student at the University of Kansas. Cochran says the format of the isotopic data does not appear unusual. More: Science Publisher Retracts 44 Papers for Being Utter Nonsense, We may earn a commission from links on this page. Bob was born in Newark, NJ on December 26, 1948 to the late James and Rose DePalma. 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. [18], DePalma began excavating systematically in 2012[1]:11 and quickly found the site to contain very unusual and promising features. Sackler has three children Rebecca, Marianna, and David with his now ex-wife, Beth Sackler. . 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. Robert DePalma r son till tandkirurgen Robert De Plama Sr i Delray Beach. Robert James DePalma, 71, a longtime Florida resident passed away Tuesday, May 12, 2020 at his residence in Fort Myers, FL. He later wrote a piece for the Proceedings of the National Academy of Sciences. "I hope this is all legitI'm just not 100% convinced yet," says Thomas Tobin, a geologist at the University of Alabama in Tuscaloosa. Their team successfully removed fossil field jackets that contained articulated sturgeons, paddlefish, and bowfins. Astonishment, skepticism greet fossils claimed to record dinosaur-killing asteroid impact. The 1960 Valdivia Chile earthquake was the most powerful ever recorded, estimated at magnitude 9.4 to 9.6. Miami Dade does not have an operational mass spectrometer, suggesting McKinney would have had to perform the isotope analyses underlying the paper at another facility. A Triceratops or other ceratopsian ilium (hip bone) was found at the high water mark, in circumstances hinting that the dinosaur might speculatively have been a floating carcass and possibly alive at or just before impact,[5] but the paper describing such remains was still in progress as of 2019[6] the initial papers only include a photograph and its location within Tanis. Until a few years ago, some researchers had suspected the last dinosaurs vanished thousands of years before the catastrophe. The latter paper was published by a team led by Robert DePalma, Durings former collaborator and a paleontologist now at the University of Manchester. The deposit may also provide some of the strongest evidence yet that nonbird dinosaurs were still thriving on impact day. 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. However, because it is rare in any case for animals and plants to be fossilized, the fossil record leaves some major questions unanswered. Robert DePalma, fdd 12 oktober 1981, r en amerikansk paleontolog och kurator . Three papers were published in 2021. [2], A paper documenting Tanis was released as a prepublication on 1 April 2019. In turn, the fish remains revealed the season their lives endedergo, the precise timing of the devastating asteroid strike to the Yucatn Peninsula. The response doesnt satisfy During and Ahlberg, who want the paper retracted. Recognizing the unique nature of the site, Nicklas and Sula brought in Robert DePalma, a University of Kansas graduate student, to perform additional excavations. Bottom right, a small fragment of a marine annemite shell found in the freshwater Tanis deposit. November 5, 2015. 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. [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. 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. paper] may be fabricated, created to fit an already known conclusion. (She also posted the statement on the OSF Preprints server today.). DePalma characterizes their interactions differently. Fragile remains spanning the layers of debris show that the site was laid down in a single event over a short timespan. No part of Durings paper had any bearing on the content of our study, DePalma says. This further evidences the violent nature of the event. 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.His advisor suggested seeking a similar site, closer to the K-Pg boundary layer. No fossil beds were yet known that could clearly show the details that might resolve these questions. If the team, led by Robert DePalma, a graduate student in paleontology at the University of Kansas in Lawrence, is correct, it has uncovered a record of apocalyptic destruction 3000 kilometers from Chicxulub. As a part of the settlement, the Sacklers will have immunity against any and all future civil litigation. The extinction event caused by this impact began the Cenozoic, in which mammals - including humans - would eventually come to dominate life on Earth. A meteor impact 66 million years ago generated a tsunami-like wave in an inland sea that killed and buried fish, mammals, insects and a dinosaur, the first victims of Earth's most recent mass extinction event. Robert DePalma. Disbelievers of this supposition, though, point to the lack of fossils in the KT layer as proof that this thesis is false more fossils are discovered some 10 feet underneath the layer. It also proves that geology and paleontology is still a science of discovery, even in the 21 st Century." Using radiometric dating, stratigraphy, fossil pollen, index fossils, and a capping layer of iridium-rich clay, the research team laboriously determined in a previous study led by DePalma in 2019 that the Tanis site dated from precisely . .mw-parser-output .citation{word-wrap:break-word}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}^Note 1 This section is drawn from the original 2019 paper[1] and its supplementary materials,[4] which describe the site in detail. Several more papers on Tanis are now in preparation, Manning says, and he expects they will describe the dinosaur fossils that are mentioned in The New Yorker article. . The raw data are missing, he says, because the scientist who ran the analyses died years prior to the papers publication, and DePalma has been unable to recover them from his deceased collaborators laboratory. But McKinneys former department chair, Pablo Sacasa, says he is not aware of McKinney ever collaborating with laboratories at other institutions. Appropriate editorial action will be taken once this matter is resolved.. It is certainly within the rights of the journal editors to request the source data, adds Mike Rossner, an independent scientist who investigates claims of biomedical image data manipulation. [5] The microtektites were present and concentrated in the gills of about 50% of the fossilized fish, in amber, and buried in the small pits in the mud which they had made when they contemporaneously impacted. By Robert Sanders, Media relations | March 29, 2019. Its author, Douglas Preston, who learned of the find from DePalma in 2013, writes that DePalma's team found dinosaur bones caught up in the 1.3-meter-thick deposit, some so high in the sequence that DePalma suspects the carcasses were floating in the roiling water. 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.