Help News from Science publish trustworthy, high-impact stories about research and the people who shape it. He has mined a fossil site in North Dakota secretly for . Of his discovery, DePalma said, "It's like finding the Holy Grail clutched in the . No fossil beds were yet known that could clearly show the details that might resolve these questions. The University of Kansas prohibits discrimination on the basis of race, color, ethnicity, religion, sex, national origin, age, ancestry, disability, status as a veteran, sexual orientation, marital status, parental status, gender identity, gender expression, and genetic information in the university's programs and activities. Part of the phenomenally fossil-rich Hell Creek Formation, Tanis sat on the shore of the ancient Western Interior Seaway some 65 million years ago. Sir David Attenborough is to examine the mystery of the dinosaurs' last days in a BBC1/PBS/France Tlvisions feature film that will unearth a dig site hidden in the hills of North Dakota. 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. Paleontologist Robert DePalma, featured in PBS's "Dinosaur Apocalypse," discusses an astonishing trove of fossils. Does fossil site record dino-killing impact? ", "Tanis exhibits a depositional scenario that was unusual in being highly conducive to exceptional (largely three dimensional) preservation of many articulated carcasses (Konservat-Lagersttte). 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. 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 . With the exception of some ectothermic species such as the ancestors of the modern leatherback sea turtle and crocodiles, no tetrapods weighing more than 25kg (55lb) survived. Manning confirms rumors that the study was initially submitted to a journal with a higher impact factor before it was accepted at PNAS. Robert DePalma r son till tandkirurgen Robert De Plama Sr i Delray Beach. Something is fishy here, says Mauricio Barbi, a high energy physicist at the University of Regina who specializes in applying physics methods to paleontology. DePalma's team argues that as seismic waves from the distant impact reached Tanis minutes later, the shaking generated 10-meter waves that surged from the sea up the river valley, dumping sediment and both marine and freshwater organisms there. [5] Co-author Professor Phillip Manning, a specialist in fossil soft tissues,[19] described DePalma's working techniques at Tanis as "meticulous" and "borderline archaeological in his excavation approach". 2023 American Association for the Advancement of Science. During, whose paper was accepted by Nature shortly afterward and published in February, suspects that DePalma, eager to claim credit for the finding, wanted to scoop herand made up the data to stake his claim. But just one dinosaur bone is discussed in the PNAS studyand it is mentioned in a supplement document rather than in the paper itself. November 5, 2015. We may earn a commission from links on this page. [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. A researcher claims that Robert DePalma published a faulty study in order to get ahead of her own work on the Tanis fossil site. 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. Episode . The deposit itself is about 1.3m thick, sharply overlaying the point bar, in a drape-like manner. [5] The fish were not bottom feeders. Their team successfully removed fossil field jackets that contained articulated sturgeons, paddlefish, and bowfins. DePalma says his team also invited Durings team to join DePalmas ongoing study. An imagined dinosaur scene just after the asteroid strike that caused a mass extinction, from . At his suggestion, she wrote a formal letter to Scientific Reports. Robert DePalma made headlines again in 2021 with the discovery of a leg from a Thescelosaurus dinosaur at Tanis, reported The Washington Post. Underneath a freshwater paddlefish skeleton, a mosasaur tooth appeared. Robert DePalma, fdd 12 oktober 1981, r en amerikansk paleontolog och kurator . 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. They seem to have left the raw data out of the manuscript deliberately, he says. 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. While DePalma corrected his claim, his reputation still took a hit. 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. During and Ahlberg, a member of the Royal Swedish Academy of Sciences, question whether they exist. 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. Han vxte upp i Boca Raton i Florida. 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. Discoveries shed new light on the day the dinosaurs died. The Hell Creek Formation is a well-known and much-studied fossil-bearing formation (geological region) of mostly Upper Cretaceous and some lower Paleocene rock, that stretches across portions of Montana, North Dakota, South Dakota, and Wyoming in North America. Help News from Science publish trustworthy, high-impact stories about research and the people who shape it. [23], As of April 2019, several other papers were stated to be in preparation, with further papers anticipated by DePalma and co-authors, and some by visiting researchers.[24]. A newly discovered winged raptor may have belonged to a lineage of dinosaurs that grew large after . 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. [20], Later discoveries included large primitive feathers 3040cm long with 3.5mm quills believed to come from large dinosaurs; broken remains from almost all known Hell Creek dinosaur groups, including some incredibly rare hatchling and intact egg with embryo fossils; fossil pterosaurs for which no other fossils exist at that time; drowned ant nests with ants inside and chambers filled with asteroid debris; and burrows of small mammals living at the site immediately after the impact. 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. Robert DEPALMA, Postgraduate Researcher | Cited by 253 | of The University of Manchester, Manchester | Read 18 publications | Contact Robert DEPALMA "I hope this is all legitI'm just not 100% convinced yet," says Thomas Tobin, a geologist at the University of Alabama in Tuscaloosa. "I'm suspicious of the findings. Could NASA's Electric Airplane Make Aviation More Sustainable? As detailed by Science, the isotopic data in DePalmas paper was collected by archaeologist Curtis McKinney, who died in 2017. This whole site is the KT boundary We have the whole KT event preserved in these sediments. Three papers were published in 2021. Kansas University, via Agence France-Presse Getty Images 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. 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. They presumably formed from droplets of molten rock launched into the atmosphere at the impact site, which cooled and solidified as they plummeted back to Earth. The skull of the scarred Edmontosaurus also showed signs of trauma, and from the size and shape of the marks on the bone, Rothschild and fellow co-author Robert DePalma, a paleontologist at the . "No one is an expert on all of those subjects," he says, so it's going to take a few months for the research community to digest the findings and evaluate whether they support such extraordinary conclusions. He is survived by his loving wife,. The event included waves with at least 10 meters run-up height (the vertical distance a wave travels after it reaches land). It feels like a case of the dog ate my homework, and I dont think the relatives of Curtis McKinney deserve this, During told Gizmodo. 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 . His reputation suffered when, in 2015, he and his colleagues described a new genus of dinosaur named Dakotaraptor, found in a site close to Tanis. Han var redan som barn fascinerad av ben. Both papers studied 66-million-year-old paddlefish jawbones and sturgeon fin spines from Tanis. After his team learned about Durings plan to submit a paper, DePalma says, one of his colleagues strongly advised During that the paper must at minimum acknowledge the teams earlier work and include DePalmas name as a co-author. A researcher claims that Robert DePalma published a faulty study in order to get ahead of her own work on the Tanis fossil site. Last month, During published a comment on PubPeer alleging that the data in DePalmas paper may be fabricated. If we've learned anything from the COVID-19 pandemic, it's that we cannot wait for a crisis to respond. 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. "His line between commercial and academic work is not as clean as it is for other people," says one geologist who asked not to be named. 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.. Now, a different group of researchers is accusing the former group of faking their data; the journal that published the research has added an editors note to the paper saying the data is under review. He says the study published in Scientific Reports began long before During became interested in the topic and was published after extended discussions over publishing a joint paper went nowhere. Additional fossils, including this beautifully preserved fish tail, have been found at the Tanis site in North Dakota. But the fossils also held clues to the season of the catastrophe, During found. 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 . Numerous famous fossils of plants and animals, including many types of dinosaur fossils, have been discovered there. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER. How to Know If the Heat Is Making You Sick. Dinosaurs have been dead for so long,'" DePalma told The Washington Post. Tanis is a significant site because it appears to record the events from the first minutes until . A study published by paleontologist Robert DePalma in December last year concluded that dinosaurs went extinct during the springtime. 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 is a paleontologist who holds the lease to the Tanis site and controls access to it. During described the findings in her 2018 masters thesis, a copy of which she shared with DePalma in February 2019. 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. 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. [13], The formation contains a series of fresh and brackish-water clays, mudstones, and sandstones deposited during the Maastrichtian and Danian (respectively, the end of the Cretaceous and the beginning of the Paleogene periods) by fluvial activity in fluctuating river channels and deltas and very occasional peaty swamp deposits along the low-lying eastern continental margin fronting the late Cretaceous Western Interior Seaway. All rights reserved. [1]:p.8192 The river flowed Eastward (other than impact driven waves),[1]:p.8192 with inland being to the West; Tanis itself was therefore in an ancient river valley close to the Westward shore of the Interior Seaway. [1]:p.8 The site formed part of a bend in an ancient river on the westward shore of the seaway,[1]:p.8192[4]:pp.5,6,23 and was flooded with great force by these waves, which carried sea, land, freshwater animals and plants, and other debris several miles inland. Based on the chemical isotope signatures and bone growth patterns found in fossilized fish collected at Tanis, a renowned fossil site in North Dakota, During had concluded the asteroid that ended the dinosaur era 65 million years ago struck Earth when it was spring in the Northern Hemisphere. 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. The day 66 million years ago when the reign of the dinosaurs ended and the rise of . Over the next 2 years, During says she made repeated attempts to discuss authorship with DePalma, but he declined to join her paper. Get more great content like this delivered right to you! Other geologists say they can't shake a sense of suspicion about DePalma himself, who, along with his Ph.D. work, is also a curator at the Palm Beach Museum of Natural History in Wellington, Florida. . By Robert Sanders, Media relations | March 29, 2019. The former Purdue President is now 76 years of age. But no one has found direct evidence of its lethal effects. This is misconduct, During wrote in an email to Gizmodo. "He could have stumbled on something amazing, but he has a reputation for making a lot out of a little.". A wealth of other evidence has persuaded most researchers that the impact played some role in the extinctions. [26][27][28][29] A paper published in Scientific Reports in December 2021 suggested that the impact took place in the Spring or Early Summer, based on the cyclical isotope curves found in acipensieriform fish bones at the site, and other evidence. The mud and sand are dotted with glassy spherulesmany caught in the gills of the fishisotopically dated to 65.8 million years ago. It is truly a magnificent site surely one of the best sites ever found for telling just what happened on the day of the impact. Get more great content like this delivered right to you! A field assistant, Rudy Pascucci, left, and the paleontologist Robert DePalma, right, at DePalma's dig site. Some scientists cite the KT layer a 66-million-year-old section of earth present through most of the world, with a high iridium level as proof that this is so. 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. They've been presented at meetings in various ways with various associated extraordinary claims," a West Coast paleontologist said to The New Yorker. Raising the Bar: Chocolate's History, Art, and Taste With Sophia Contreras Rea The latter paper was published by a team led by Robert DePalma, Durings former collaborator and a paleontologist now at the University of Manchester. DePalma's team says the killing is captured in forensic detail in the 1.3-meter-thick Tanis deposit, which it says formed in just a few hours, beginning perhaps 13 minutes after impact. There was no advanced decay. . "That some competitors have cast Robert in a negative light is unfortunate and unfair," says another co-author, Mark Richards, a geophysicist at the University of California, Berkeley. Taylor Mickal/NASA. Impact Theory of Mass Extinctions and the Invertebrate Fossil Record, The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary. The findings are the work of paleontologist Robert DePalma, who has previously attracted controversy. Robert DePalma Frederich Cichocki Manuel Dierick Robert Feeney: JPS.C.10.0001: Volume 1, 2007 "How to Make a Fossil: Part 2 - Dinosaur Mummies and Other Soft Tissue" . It could be just one factor in a series of environmental events that led to their extinction. It's at a North Dakota cattle ranch, some 2,000 miles (3,220 km) away. 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). Tobin says the PNAS paper is densely packed with detail from paleontology, sedimentology, geochemistry, and more. 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. The paleontologist believed that this new information further supported the theory that an asteroid killed the dinosaurs along with 75 percent of the animals and plants on Earth 66 million year . [30] However, the journal later published a note in December 2022 stating that "the reliability of data presented in this manuscript [] currently in question" following claims that data in the paper was fabricated in order to scoop a later paper[18] published in Nature February 2022 (but submitted before the Scientific Reports paper was submitted), by a separate team, which also studied the fish skeletons found at Tanis, and also identified annual cyclical changes, and found that the impact had occurred in spring. Ahlberg shared her concerns. View Obituary & Service Information We absolutely would not, and have not ever, fabricated data and/or samples to fit this or another teams results, he wrote in an email to Science. 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. A version of this story appeared in Science, Vol 378, Issue 6625. [2], A paper documenting Tanis was released as a prepublication on 1 April 2019. Paleontologist Robert DePalma, postgraduate researcher at University of Manchester UK and adjunct professor for the Florida Atlantic University Geosciences Department, gave a guest talk at NASA's Goddard Space Flight Center in Greenbelt, Maryland, on April 6. He declined to share details because the investigation is ongoing. 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. American, said in a 2019 tweet that the findings from the site "have met with a good deal of skepticism from the paleontology community." . This is not a case of he said, she said. This is also not a case of stealing someones ideas. The 1960 Valdivia Chile earthquake was the most powerful ever recorded, estimated at magnitude 9.4 to 9.6. Gizmodo covered the research at the time. When DePalmas paper was published just over 3 months later, During says she soon noticed irregularities in the figures, and she was concerned the authors had not published their raw data. Although they stopped short of saying the irregularities clearly point to fraud, mostbut not allsaid they are so concerning that DePalmas team must come up with the raw data behind its analyses if team members want to clear themselves. [3] DePalma then presented a paper describing excavation of a burrow created by a small mammal that had been made "immediately following the K-Pg impact" at Tanis. 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. Most of central North America had recently been a large shallow seaway, called the Western Interior Seaway (also known as the North American Sea or the Western Interior Sea), and parts were still submerged. They're perfectly preserved, Robert DePalma, paleontologist, via CNN. 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. Published May 11, 2022 6:09PM (EDT) But relatively little fossil evidence is available from times nearer the crucial event, a difficulty known as the "Three metre problem". The formation is named for early studies at Hell Creek, located near Jordan, Montana, and it was designated as a National Natural Landmark in 1966. 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. [1]:figure S29 pg.53 In 2022, a partial mummified Thescelosaurus was unearthed here with its skin still intact.[7]. Another question about dinosaurs is what caused their extinction and there are many theories about that, too. Bob was born in Newark, NJ on December 26, 1948 to the late James and Rose DePalma. He has mined a fossil site in North Dakota secretly for years. [21], The site was originally a point bar - a gently sloped crescent-shaped area of deposit that accumulates on the inside bend of streams and rivers below the slip-off slope. 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. The fact that spherules were found in the fishes gills suggested the animals died in the minutes to hours after the impact. A 2-centimeter-thick layer rich in telltale iridium caps the deposit. 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.
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