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. 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. 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 . But it's not at the asteroid's crash site. This impact, which struck the Gulf of Mexico 66.043 million years ago, wiped out all non-avian dinosaurs and many other species (the so-called "K-Pg" or "K-T" extinction). It comprises two layers with sand and silt grading (coarse sands at the bottom, finer silt/clay particles at the top). The chief editor of Scientific Reports, Rafal Marszalek, says the journal is aware of concerns with the paper and is looking into them. 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 . Robert DePalma r son till tandkirurgen Robert De Plama Sr i Delray Beach. 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. 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.. 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. They did a few years of digging, uncovering beautiful, fragile sh . The plotted line graphs and figures in DePalmas paper contain numerous irregularities, During and Ahlberg claimincluding missing and duplicated data points and nonsensical error barssuggesting they were manually constructed, rather than produced by data analysis software. 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 .
High impact paleontology - Medium Both papers made their conclusions based on analysis of fish remains at the Tanis fossil site in North Dakota. DePalma made major headlines in March 2019, when a splashy New Yorker story revealed the Tanis site to the world. 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. Paleontologist Robert DePalma believes he has found evidence of the first minutes to hours of that catastrophic event.
Paleontologist accused of faking data in dino-killing asteroid paper Paleontologist accused of faking data in dino-killing asteroid paper "I just hope this hasn't been oversensationalized.". [5] The fish were not bottom feeders. 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. Top editors give you the stories you want delivered right to your inbox each weekday. The iridium-enriched CretaceousPaleogene boundary, which separates the Cretaceous from the Cenozoic, is distinctly visible as a discontinuous thin marker above and occasionally within the formation. Images: Top right, Robert DePalma and Peter Larson conduct field research in Tanis.
The Day the Dinosaurs Died | The New Yorker 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. 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. These powerful creatures prowled the Earth for about 165 million years before mysteriously disappearing (via U.S. Geological Survey). 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.
Tales of Dinosaurs Past | Biomedical Odyssey He says the reviewers for the higher-profile journal made requests that were unreasonable for a paper that simply outlines the discovery and initial analysis of Tanis. 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.
Fossilized snapshot of mass death found on North Dakota ranch DePalma says his team also invited Durings team to join DePalmas ongoing study. Robert A. DePalma1,2, David A. Burnham2,*, Larry D. Martin2,, Peter L. Larson 3 and Robert T. Bakker 4 1 Department of Vertebrate Paleontology, The Palm Beach Museum of Natural History, Fort Lauderdale, Florida; 2 University of Kansas Bio- Fragile remains spanning the layers of debris show that the site was laid down in a single event over a short timespan. 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. Underneath a freshwater paddlefish skeleton, a mosasaur tooth appeared. 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. Tobin says the PNAS paper is densely packed with detail from paleontology, sedimentology, geochemistry, and more. Dont yet have access? The event included waves with at least 10 meters run-up height (the vertical distance a wave travels after it reaches land). 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. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER. The Byte reports that the amber was found 2,000 miles away from the asteroid crater off the coast of Mexico believed to be . 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. [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. Some scientists say this destroyed the dinosaurs; others believe they thrived during the period. [1]:p.8 Seiche waves often occur shortly after significant earthquakes, even thousands of miles away, and can be sudden and violent. "The thing we can do is determine the likelihood that it died the day the meteor struck. It reads: Editors Note: Readers are alerted that the reliability of data presented in this manuscript is currently in question. 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.
A North Dakota Excavation Had One Paleontologist Rethinking The Of his discovery, DePalma said, "It's like finding the Holy Grail clutched in the . 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. But relatively little fossil evidence is available from times nearer the crucial event, a difficulty known as the "Three metre problem". There is still much unknown about these prehistoric animals. If we've learned anything from the COVID-19 pandemic, it's that we cannot wait for a crisis to respond. 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" . There is considerable detail for times greater than hundreds of thousands of years either side of the event, and for certain kinds of change on either side of the K-Pg boundary layer.
Did Richard Sackler Go to Jail? Where is He Now? - The Cinemaholic 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. [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. The response doesnt satisfy During and Ahlberg, who want the paper retracted. Robert DePalma made headlines again in 2021 with the discovery of a leg from a Thescelosaurus dinosaur at Tanis, reported The Washington Post.
Scientists find fossil of dinosaur 'killed on day of asteroid strike' Han vxte upp i Boca Raton i Florida. 2023 American Association for the Advancement of Science. If we've learned anything from the COVID-19 pandemic, it's that we cannot wait for a crisis to respond. A researcher claims that Robert DePalma published a faulty study in order to get ahead of her own work on the Tanis fossil site. 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. 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. "It's not just for paleo nerds. What's potentially so special about this site? [15][1]:p.8. 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. This is misconduct, During wrote in an email to Gizmodo. 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.