robert depalma paleontologist 2021
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. 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. Tanis at the time was located on a river that may have drained into the shallow sea covering much of what is now the eastern and southern United States. . Three papers were published in 2021. "Those few meters of rock record the wrath of the Chicxulub impact and the devastation it caused." They're perfectly preserved, Robert DePalma, paleontologist, via CNN. Additional fossils, including this beautifully preserved fish tail, have been found at the Tanis site in North Dakota. 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. Robert DePalma made headlines again in 2021 with the discovery of a leg from a Thescelosaurus dinosaur at Tanis, reported The Washington Post. Your tax-deductible contribution plays a critical role in sustaining this effort. Paleontologist Robert DePalma, featured in PBS's "Dinosaur Apocalypse," discusses an astonishing trove of fossils. 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). 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. They seem to have left the raw data out of the manuscript deliberately, he says. But a former colleague, Melanie During at Uppsala University, asserts that DePalma created data to support the conclusion. Since 2013, Sackler has resided at a private property on the outskirts of Austin, Texas. 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. Isaac Schultz. Victoria Wicks: DePalma's name is listed first on the research article published in April last year, and he has been the primary spokesman on the story . May 9, 2022 at 7:00 a.m. EDT. 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. But relatively little fossil evidence is available from times nearer the crucial event, a difficulty known as the "Three metre problem". [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. A fossil, after all, is only created under precise circumstances, with the dinosaur dying in a place that could preserve its remains in rock. 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. Special to The Forum. 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. Robert DEPALMA, Postgraduate Researcher | Cited by 253 | of The University of Manchester, Manchester | Read 18 publications | Contact Robert DEPALMA Petrified fish with glass spheres, called ejecta, were also at the site. Melanie During suspects Robert DePalma wanted to claim credit for identifying the dinosaur-killing asteroid's season of impact and fabricated data in order to be able to publish a paper . Today, their fossils lie jumbled together at a site in North Dakota. DePalma, now a Ph.D. student at the University of Manchester, vehemently denies any wrongdoing. (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. 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. Boca paleontologist Robert de Palma uncovers evidence of the day the dinosaurs diedand how it connects to homo sapiens. 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. We're seeing mass die-offs of animals and biomes that are being put through very stressful situations worldwide. Tanis is a site of paleontological interest in southwestern North Dakota, United States. 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. The 112-mile Chicxulub crater, located on the Yucatn Peninsula, contains the same mineral iridium as the KT layer, and it's often cited as further proof that a giant asteroid was responsible for killing dinosaurs (perBoredom Therapy). According to Science, DePalma was incorrect in 2015 when he believed he discovered a bone from a new type of dinosaur. Fossils from dinosaurs and other animals from thousands of years before the asteroid impact are very hard to come by, leading some to believe . When one paleontologist began excavating a dig site in the mountains of North Dakota, he soon discovered new dinosaur evidence that may change history. 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. Vid fyra rs lder fick han p ett museum . December 10, 2021 Source: . By looking through this window into the past, we can apply these lessons to today. It features what appear to be scanned printouts of manually typed tables containing the isotopic data from the fish fossils. 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. DePalma quickly began to suspect that he had stumbled upon a monumentally important and unique site not just "near" the K-Pg boundary, but a unique killing field that precisely captured the first minutes and hours after impact, when the K-Pg boundary was created, along with an unprecedented fossil record of creatures and plants that died on that day, as well as material directly from the impact itself, in circumstances that allowed exceptional preservation. Last modified on Fri 8 Apr 2022 11.20 EDT. DePalma gave the name Tanis to both the site and the river. 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. View Obituary & Service Information 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. Robert DePalma made headlines again in 2021 with the discovery of a leg from a Thescelosaurus dinosaur at Tanis, reported The Washington Post. "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. 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. Get more great content like this delivered right to you! 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. Tanis is a site of paleontological interest in southwestern North Dakota, United States. DePalma did not respond to a Gizmodo request for comment, but he told Science, We absolutely would not, and have not ever, fabricated data and/or samples to fit this or another teams results., On December 9, a note was added to DePalmas paper on the Scientific Reports website. It comprises two layers with sand and silt grading (coarse sands at the bottom, finer silt/clay particles at the top). Instead, the layers had never fully solidified, the fossils at the site were fragile, and everything appeared to have been laid down in a single large flood. I dont believe that Curtis himself went to another lab, he was ill for many years, Sacasa says. To verify the study's claims, paleontologists say that DePalma must broaden access to the site and its material. In June 2021, paleontologist Melanie During submitted a . When asked for more information on the situation on January 3, a spokesperson for Scientific Reports said there were no updates. The mud and sand are dotted with glassy spherulesmany caught in the gills of the fishisotopically dated to 65.8 million years ago. Forum News Service, provided 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. Melanie During, a paleontologist at Uppsala University in Sweden, submitted a paper for publication in the journal Nature in June 2021. We may earn a commission from links on this page. 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. Study leader Robert DePalma conducts field research at the Tanis site. The seiche waves exposed and covered the site twice, as millions of tiny microtektite droplets and debris from the impact were arriving on ballistic trajectories from their source in what is now the Yucatn Peninsula. Help News from Science publish trustworthy, high-impact stories about research and the people who shape it. There is still much unknown about these prehistoric animals. [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]. [31][18], A BBC documentary on Tanis, titled Dinosaurs: The Final Day, with Sir David Attenborough, was broadcast on 15 April 2022. Ritchie Hall | Earth, Energy & Environment Center 1414 Naismith Drive, Room 254 Lawrence, KS 66045 geology@ku.edu 785-864-4974 [1]:figure S29 pg.53 In 2022, a partial mummified Thescelosaurus was unearthed here with its skin still intact.[7]. Eiler agrees. 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. .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. "Capturing the event in that much detail is pretty remarkable," concedes Blair Schoene, a geologist at Princeton University, but he says the site does not definitively prove that the impact event was the exclusive trigger of the mass extinction. There was no advanced decay. Jan Smit first presented a paper describing the Tanis site, its association with the K-Pg boundary event and associated fossil discoveries, including the presence of glass spherules from the Chicxulub impact clustered in the gill rakers of acipenciform fishes and also found in amber. DePalma has not made public the raw, machine-produced data underlying his analyses. 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. This dinosaur, a giant reptilian, lived during the Early Cretaceous period in oceans. A 2-centimeter-thick layer rich in telltale iridium caps the deposit. 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. 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. Dinosaurs continue to fascinate, even though they became extinct 65 million years ago. "Robert has been meticulous, borderline archaeological in his excavation approach," says Manning, who has been working at Tanis from the beginning. The site was systematically excavated by Robert DePalma over several years beginning in 2012, working in near total secrecy. That "disconnect" bothers Steve Brusatte, a paleontologist at the University of Edinburgh. 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. This is not a case of he said, she said. This is also not a case of stealing someones ideas. 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. DePalma believed that the fossils found in Tanis, which sat on the KT layer, became collected there just after the asteroid struck the earth. Robert DePalma. 2023 American Association for the Advancement of Science. At his suggestion, she wrote a formal letter to Scientific Reports. [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 site lacked the fine sediment layers he was initially looking for. The chief editor of Scientific Reports, Rafal Marszalek, says the journal is aware of concerns with the paper and is looking into them. But there were other inconsistencies at the excavation site the fossils they found seemed out of place, with some skeletons located in vertical positions. 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. 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. This is misconduct, During wrote in an email to Gizmodo. Appropriate editorial action will be taken once this matter is resolved.. 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. [20] The sediment appeared to have liquefied and covered the deposited biota, then quickly solidified, preserving much of the contents in three dimensions. A researcher claims that Robert DePalma published a faulty study in order to get ahead of her own work on the Tanis fossil site. The fact that spherules were found in the fishes gills suggested the animals died in the minutes to hours after the impact. 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. These fossils were delivered for research to the Field Museum of Natural History in Chicago. [2][3] The full paper introducing Tanis was widely covered in worldwide media on 29 March 2019, in advance of its official publication three days later. "He could have stumbled on something amazing, but he has a reputation for making a lot out of a little.". "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. "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. [15][1]:p.8. An aspiring novelist, he attended The Ohio State University studying English and The site was originally discovered in 2008 by University of North Georgia Professor Steve Nicklas and field paleontologist Rob Sula.
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