[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. 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. Robert DePalma made headlines again in 2021 with the discovery of a leg from a Thescelosaurus dinosaur at Tanis, reported The Washington Post. The nerds travel to the final day of the dinosaurs reign with paleontologist Robert DePalma and the legendary Tanis Site. 2021 (106) December (5) November (8) October (8 . DePalma holds the lease to the Tanis site, which sits on private land, and controls access to it. Robert DePalma is a paleontologist who holds the lease to the Tanis site and controls access to it.. [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. Last month, During published a comment on PubPeer alleging that the data in DePalmas paper may be fabricated. Searching in the hills of North Dakota, palaeontologist Robert DePalma makes an incredible . His advisor suggested seeking a similar site, closer to the K-Pg boundary layer. At his suggestion, she wrote a formal letter to Scientific Reports. By Robert Sanders, Media relations | March 29, 2019. Today, the layer of debris, ash and soot resulting from the asteroid strike is preserved in the Earth's sediment. Paleontologist Robert DePalma, featured in PBS's "Dinosaur Apocalypse," discusses an astonishing trove of fossils. The Tanis site was first identified in 2008 and has been the focus of fieldwork by paleontologist Robert DePalma since . I dont believe that Curtis himself went to another lab, he was ill for many years, Sacasa says. We're seeing mass die-offs of animals and biomes that are being put through very stressful situations worldwide. Th though Robert DePalma's love of the dead and buried was anything but . There is still much unknown about these prehistoric animals. Raw machine data are seldom supplied to end users (myself included) who contract for isotope analyses from a lab that does them., Cochran says DePalma erred in not including these data and their origins in his original manuscript, but the bottom line is that I have no reason to distrust the basic data or in any way believe that it was fabricated., Eiler disputes this. Robert DePalma is a paleontologist who holds the lease to the Tanis site and controls access to it. Sackler has three children Rebecca, Marianna, and David with his now ex-wife, Beth Sackler. DePalma has not made public the raw, machine-produced data underlying his analyses. Comes with twelve different courses comprised of a huge number of lessons, and each one will help you learn more about Python itself, and can be accessed when you want and as often as you want forever, making it ideal for learning a new skill. On 2 December, according to an email forwarded to Science, the editor handling DePalmas paper at Scientific Reports formally responded to During and Ahlberg for the first time, During says. As of April 2019, reported findings include: The hundreds of fish remains are distributed by size, and generally show evidence of tetany (a body posture related to suffocation in fish), suggesting strongly that they were all killed indiscriminately by a common suffocating cause that affected the entire population. "We're never going to say with 100 percent certainty that this leg came from an animal that died on that day," the scientist said to the publication. Fossils from dinosaurs and other animals from thousands of years before the asteroid impact are very hard to come by, leading some to believe . [8] The site continues to be explored. [22] The discovery received widespread media coverage from 29 March 2019. The email, which came after Science started to inquire about the case, says their concerns remain under investigation. 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. 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. Something is fishy here, says Mauricio Barbi, a high energy physicist at the University of Regina who specializes in applying physics methods to paleontology. Special to The Forum. May 9, 2022 at 7:00 a.m. EDT. A version of this story appeared in Science, Vol 378, Issue 6625. Robert DePalma. 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. 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. But relatively little fossil evidence is available from times nearer the crucial event, a difficulty known as the "Three metre problem". Manning confirms rumors that the study was initially submitted to a journal with a higher impact factor before it was accepted at PNAS. Tanis is on private land; DePalma holds the lease to the site and controls access to it. 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. During visited Tanis in 2017, when she was a masters student at the Free University of Amsterdam. Could NASA's Electric Airplane Make Aviation More Sustainable? They seem to have left the raw data out of the manuscript deliberately, he says. 2 / 4: Robert A. DePalma, a paleontologist at the Palm Beach Museum of Natural History and a graduate student at the University of Kansas. The day 66 million years ago when the reign of the dinosaurs ended and the rise of . Tanis is a site of paleontological interest in southwestern North Dakota, United States. . Robert Depalma, paleontologist, describes the meteor impact 66 million years ago that generated a tsunami-like wave in an inland sea that killed and buried f. But McKinneys former department chair, Pablo Sacasa, says he is not aware of McKinney ever collaborating with laboratories at other institutions. But just one dinosaur bone is discussed in the PNAS studyand it is mentioned in a supplement document rather than in the paper itself. 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.. All rights reserved. Robert A. DePalma, a paleontologist at the Palm Beach Museum of Natural History and a graduate student at the University of Kansas. It is not even clear whether the massive waves were able to traverse the entire Interior Seaway. 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. [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. Proposed by Luis and Walter Alvarez, it is now widely accepted that the extinction was caused by a huge asteroid or bolide that impacted Earth in the shallow seas of the Gulf of Mexico, leaving behind the Chicxulub crater. September 20, 2021. When one paleontologist began excavating a dig site in the mountains of North Dakota, he soon discovered new dinosaur evidence that may change history. Science asked other co-authors on the paper, including Manning, for comment, but none responded. Your tax-deductible contribution plays a critical role in sustaining this effort. "He could have stumbled on something amazing, but he has a reputation for making a lot out of a little.". 01/05/2021. But the fossils also held clues to the season of the catastrophe, During found. ", Since Tanis became an excavation site, several other fossils were found, including a pterosaur embryo. This directly applies to today. 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. They've been presented at meetings in various ways with various associated extraordinary claims," a West Coast paleontologist said to The New Yorker. The media article was published several days before an accompanying research paper on the site came out in the Proceedings of the National Academy of Sciences. "Robert has been meticulous, borderline archaeological in his excavation approach," says Manning, who has been working at Tanis from the beginning. 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 . Mr. Frithiof was able to broker an agreement between Paleo Prospectors and DePalma. Help News from Science publish trustworthy, high-impact stories about research and the people who shape it. The site was originally discovered in 2008 by University of North Georgia Professor Steve Nicklas and field paleontologist Rob Sula. The lead author of that paper, and of the 2021 Scientific Reports paper, is Robert DePalma, a paleontologist who was the central character in a lengthy story published by The New Yorker a day . 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. But During, a Ph.D. candidate at Uppsala University (UU), received a shock of her own in December 2021, while her paper was still under review. [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. This is not a case of he said, she said. This is also not a case of stealing someones ideas. Forum News Service, provided DePalma says his team also invited Durings team to join DePalmas ongoing study. Point bars are common in mature or meandering streams. 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. 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. Several independent scientists consulted about the case by Science agreed the Scientific Reports paper contains suspicious irregularities, and most were surprised that the paperwhich they note contains typos, unresolved proofreaders notes, and several basic notation errorswas published in the first place. The site was systematically excavated by Robert DePalma over several years beginning in 2012, working in near total secrecy. The former Purdue President is now 76 years of age. He suggested that the impact caused huge seiches (or tsunamis), which allowed the mosasaur tooth to travel from fresh water to that spot, along with freshwater sturgeon that may have choked on glassy pieces from the collision, reported Science. Still, when During submitted her manuscript to Nature on 22 June 2021, she listed DePalma as the studys second author. A study published by paleontologist Robert DePalma in December last year concluded that dinosaurs went extinct during the springtime. Bde hans far och hans farfars bror var kirurger i Florida. Taylor Mickal/NASA. At the site, called Tanis, the researchers say they have discovered the chaotic debris left when tsunamilike waves surged up a river valley. Additional fossils, including this beautifully preserved fish tail, have been found at the Tanis site in North Dakota. But two months before Durings paper would be published, a paper came out in Scientific Reports reaching essentially the same conclusion, based on an entirely separate data set, Science reported. They're perfectly preserved, Robert DePalma, paleontologist, via CNN. Robert DePalma uncovers a preserved articulated body of a 65-million-year-old fish at Tanis. These fossils were delivered for research to the Field Museum of Natural History in Chicago. 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. "I'm suspicious of the findings. Tobin says the PNAS paper is densely packed with detail from paleontology, sedimentology, geochemistry, and more. When I saw [microtektites in their own impact craters], I knew this wasnt just any flood deposit. 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. 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. . By Dave Kindy. We werent just near the KT boundary. In December 2021, a team of paleontologists published data . Both papers studied 66-million-year-old paddlefish jawbones and sturgeon fin spines from Tanis. 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]. 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. The 1960 Valdivia Chile earthquake was the most powerful ever recorded, estimated at magnitude 9.4 to 9.6. DePalma, now a Ph.D. student at the University of Manchester, vehemently denies any wrongdoing. Everything he found had been covered so quickly that details were exceptionally well preserved, and the fossils as a whole formed a very unusual collection fish fins and complete fish, tree trunks with amber, fossils in upright rather than squashed flat positions, hundreds or thousands of cartilaginous fully articulated freshwater paddlefish, sturgeon and even saltwater mosasaurs which had ended up on the same mudbank miles inland (only about four fossilized fish were previously known from the entire Hell Creek formation), fragile body parts such as complete and intact tails, ripped from the seafish's bodies and preserved inland in a manner that suggested they were covered almost immediately after death, and everywhere millions of tiny spheres of glassy material known as microtektites, the result of tiny splatters of molten material reaching the ground. "That's the first ever evidence of the interaction between life on the last day of the Cretaceous and the impact event," says team member Phillip Manning, a paleontologist at the University of Manchester in the United Kingdom. Astonishment, skepticism greet fossils claimed to record dinosaur-killing asteroid impact. 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. DEPALMA Robert Michael DePalma Jr. of Columbus, Ohio passed away unexpectedly February 15, 2010 at the age of 26 years. Both papers made their conclusions based on analysis of fish remains at the Tanis fossil site in North Dakota. He is survived by his loving wife,. 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. 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. 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. One of these is whether dinosaurs were already declining at the time of the event due to ongoing volcanic climate change. When we look at the preservation of the leg and the skin around the articulated bones, we're talking on the day of impact or right before. .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. [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 extinction event caused by this impact began the Cenozoic, in which mammals - including humans - would eventually come to dominate life on Earth. He had already named the genus Dakotaraptor when others identified it as belonging to a prehistoric turtle. This had initially been a seaway between separate continents, but it had narrowed in the late Cretaceous to become, in effect, a large inland extension to the Gulf of Mexico. Was it a fierce volcanic eruption that toppled these creatures? [15][1]:p.8. DePalma and his colleagues have been working at Tanis since 2012. 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. "That's the first ever evidence of the interaction between life on the last day of the Cretaceous and the impact event," team member Phillip Manning, a paleontologist at the University of Manchester in the United Kingdom, told the publication. 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. 03/30/2022. But there were other inconsistencies at the excavation site the fossils they found seemed out of place, with some skeletons located in vertical positions. 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). [1]:pg.11 Key findings were presented in two conference papers in October 2017. Robert DEPALMA, Postgraduate Researcher | Cited by 253 | of The University of Manchester, Manchester | Read 18 publications | Contact Robert DEPALMA 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. "Those few meters of rock record the wrath of the Chicxulub impact and the devastation it caused." [25] The last was published in December in Scientific Reports. As detailed by Science, the isotopic data in DePalmas paper was collected by archaeologist Curtis McKinney, who died in 2017. Impact Theory of Mass Extinctions and the Invertebrate Fossil Record, The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary. Since 2012, paleontologist Robert DePalma has been excavating a site in North Dakota that he thinks is "an incredible and unprecedented discovery". [5] The original discoverers of the site (Rob Sula and Steve Nicklas), who worked the site for several years, recognized its scientific importance and offered it to DePalma as he had some previous experience with working on fish sites. While DePalma corrected his claim, his reputation still took a hit. 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. Ahlberg shared her concerns. (Formula and details)The 2011 Thoku earthquake and tsunami was estimated at magnitude 9.1, so the energy released by the Chicxulub earthquakes, estimated at up to magnitude 11.5, may have been up to 101.5 x (11.59.1) = 3981 times larger. Robert DePalma, a curator at the Palm Beach Museum of Natural History, found some rare fossils close to Bowman, North Dakota, in 2013 that led to a hypothesis of his own. A bad day for dinosaurs was the subject of an engaging hour-and-a-half for both paleontologists and NASA researchers. DePalma gave the name Tanis to both the site and the river. Both Landman and Cochran confirmed to Science they had reviewed the data supplied by DePalma in January, apparently following Scientific Reportss request for additional clarification on the issues raised by During and Ahlberg immediately after the papers publication. 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. [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]. Those files were almost certainly backed up, and the lab must have some kind of record keeping process that says what was done when and by whom., Barbi is similarly unimpressed. During the long process of discussing these options they decided to submit their paper, he says. The paper, in the Proceedings of the National Academy of Sciences (PNAS), does not include all the scientific claims mentioned in The New Yorker story, including that numerous dinosaurs as well as fish were buried at the site. 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. The Hell Creek Formation was at this time very low-lying or partly submerged land at the northern end of the seaway, and the Chicxulub impact occurred in the shallow seas at the southern end, approximately 3,050km (1,900mi) from the site. Based on the . 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. Published May 11, 2022 6:09PM (EDT) [12] It marked the end of the Cretaceous period and the Mesozoic Era, opening the Cenozoic Era that continues today. Underneath a freshwater paddlefish skeleton, a mosasaur tooth appeared. The site, after all, does not conclusively prove that the asteroid's impact actually caused the dinosaurs' demise, reported Science. Eighteen months before publication of the peer-reviewed PNAS paper in 2019[1] DePalma and his colleagues presented two conference papers on fossil finds at Tanis on 23 October 2017 at the annual meeting of the Geological Society of America. 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. They did a few years of digging, uncovering beautiful, fragile sh . But a former colleague, Melanie During at Uppsala University, asserts that DePalma created data to support the conclusion. It's at a North Dakota cattle ranch, some 2,000 miles (3,220 km) away. In June 2021, paleontologist Melanie During submitted a manuscript to Nature that she suspected might create a minor scientific sensation. 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" . Schoene and some others believe environmental turmoil caused by large-scale volcanic activity in what is now central India may have taken a toll even before the impact. 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. 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.

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