Robert DePalma. DePalma believed that the fossils found in Tanis, which sat on the KT layer, became collected there just after the asteroid struck the earth. The death scene from within an hour of the impact has been excavated at an unprecedented . But there were other inconsistencies at the excavation site the fossils they found seemed out of place, with some skeletons located in vertical positions. 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. In the comment, During, her co-author Dennis Voeten, and her supervisor Per Ahlberg highlight anomalies in the other teams isotope analysis, a dearth of primary data, insufficiently described methods, and the fact that DePalmas team didnt specify the lab where the analyses were performed. After his excavations at the Tanis site in North Dakota unearthed a huge trove of fish fossils that were likely blasted by the asteroid impact . DePalma and his group knew the creature could not have survived in North Dakota's fresh waters during the prehistoric age. 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. Drawing on research from paleontologist Robert DePalma, we follow DePalma's dig over the course of three years at a new site in North Dakota, unearthing remarkably well-preserved fossilised . "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. Additional fossils, including this beautifully preserved fish tail, have been found at the Tanis site in North Dakota. Dinosaurs have been dead for so long,'" DePalma told The Washington Post. 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. Asked where McKinney conducted his isotopic analyses, DePalma did not provide an answer. Robert DePalma published a study in December 2021 that said the dinosaurs went extinct in the springtime - but a former colleague has alleged that it's based on fake data. Robert James DePalma, 71, a longtime Florida resident passed away Tuesday, May 12, 2020 at his residence in Fort Myers, FL. Plus, tektites, pieces of natural glass formed by a meteor's impact, were scattered amid the soil. 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. Such Konservat-Lagersttten are rare because they require special depositional circumstances. Page numbers in this section refer to those papers. This directly applies to today. The mud and sand are dotted with glassy spherulesmany caught in the gills of the fishisotopically dated to 65.8 million years ago. 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. 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 . Robert DePalma made headlines again in 2021 with the discovery of a leg from a . Something is fishy here, says Mauricio Barbi, a high energy physicist at the University of Regina who specializes in applying physics methods to paleontology. He has mined a fossil site in North Dakota secretly for . Tanis is a significant site because it appears to record the events from the first minutes until . Mr. Frithiof was able to broker an agreement between Paleo Prospectors and DePalma. [8] Following suspicions of manipulating data, a complained was lodged against DePalma with the University of Manchester. (Courtesy of Robert DePalma) You and your team have made some extraordinary finds, including an exquisitely preserved leg of a dinosaur that you believed died on the very day of the asteroid impact. 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. Over the next 2 years, During says she made repeated attempts to discuss authorship with DePalma, but he declined to join her paper. 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. 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. Robert DePalma is a paleontologist who holds the lease to the Tanis site and controls access to it.. A thin layer of bone cells on sturgeons fins thickens each spring and thins in the fall, providing a kind of seasonal metronome; the x-rays revealed these layers were just beginning to thicken when the animals met their end, pointing to a springtime impact. Robert DePalmashown here giving a talk at NASAs Goddard Space Flight Center in Aprilpublished a paper in December 2021 showing the asteroid that killed the dinosaurs struck Earth in the spring. 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. Th A version of this story appeared in Science, Vol 378, Issue 6625. All of these factors seemed strange and confused the paleontologists. As detailed by Science, the isotopic data in DePalmas paper was collected by archaeologist Curtis McKinney, who died in 2017. 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. How to Know If the Heat Is Making You Sick. The Tanis site was first identified in 2008 and has been the focus of fieldwork by paleontologist Robert DePalma since . 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]. "I'm suspicious of the findings. It reads: Editors Note: Readers are alerted that the reliability of data presented in this manuscript is currently in question. Robert DEPALMA, Postgraduate Researcher | Cited by 253 | of The University of Manchester, Manchester | Read 18 publications | Contact Robert DEPALMA . But a former colleague, Melanie During at Uppsala University, asserts that DePalma created data to support the conclusion. With David Attenborough, Robert DePalma, Phillip Manning. He says his team came up with the idea of using fossils isotopic signals to hunt for evidence of the asteroid impacts season long ago, and During adopted it after learning about it during her Tanis visita notion During rejects. When one paleontologist began excavating a dig site in the mountains of North Dakota, he soon discovered new dinosaur evidence that may change history. Using the same formula, the Chicxulub earthquakes may have released up to 1412 times as much energy as the Chile event. 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. More: Science Publisher Retracts 44 Papers for Being Utter Nonsense, We may earn a commission from links on this page. Also, there is little evidence on the detailed effects of the event on Earth and its biosphere. These tables are not the same as raw data produced by the mass spectrometer named in the papers methods section, but DePalma noted the datas credibility had been verified by two outside researchers, paleontologist Neil Landman at the American Museum of Natural History and geochemist Kirk Cochran at Stony Brook University. 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. The former Purdue President is now 76 years of age. An aspiring novelist, he attended The Ohio State University studying English and 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.. Could NASA's Electric Airplane Make Aviation More Sustainable? [1]:p.8193 The original paper describes the river in technical detail:[1]:Fig.1 and p.9181-8193. 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. View Obituary & Service Information While some lived near a river, lake, lagoon, or another place where sediment was found, many thrived in other habitats. Top left, a shocked mineral from Tanis. 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.
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