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Search resuls for: "Megalodon"


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Ancient relative of the great white sharkMost species of Ptychodus lived between 100 and 80 million years ago during the late Cretaceous period. Because shark skeletons are made of cartilage, they do not fossilize well, typically leaving archaeologists only teeth and few skeletal remains to find. Lamniformes also includes the modern species of megamouth, sand, goblin and basking sharks, among others. “The crushing teeth together with the gigantic size make Ptychodus a very unique shark,” Amadori said. … Modern durophagous sharks (that consume hard-shelled organisms) are demersal, feeding on or near the bottom.
Persons: , Eduardo Villalobos Segura, Villalobos Segura, Lamniformes, Manuel Amadori, Amadori, Michael Everhart, Louis Agassiz, Everhart, mortoni, , ” Amadori, , Jürgen, Bretton Kent, ” Kent Organizations: CNN, Royal Society, Biological Sciences, University of Vienna, Sternberg, Nuevo León, University of Maryland Locations: Mexico, Austria, Nuevo León, Vallecillo, Nuevo, Hays , Kansas, Ptychodus
Mars Perseverance rover loses its trusty scout
  + stars: | 2024-01-27 | by ( Ashley Strickland | ) edition.cnn.com   time to read: +7 min
And it’s time to bid farewell to one of the most delightfully plucky robots ever to explore Mars. Other worldsThe Ingenuity helicopter, seen here on Mars in an image taken by the Perseverance rover on August 2, 2023, has flown for the last time. Ingenuity served as the Perseverance rover’s faithful companion and aerial scout for nearly three years since its maiden flight on April 19, 2021. A long time agoAiming to trace syphilis' origins, researchers used paleopathology techniques to study ancient human bones at the site Jabuticabeira II in Brazil's Santa Catarina state. They find wonder in planets beyond our solar system and discoveries from the ancient world.
Persons: , Theodore Roosevelt, Teddy Tzanetos, Thomas Jefferson, it’s, Jose Filippini, Samson Acoca, Pierre, Olivier Cheptou, Ashley Strickland, Katie Hunt Organizations: CNN, Jet Propulsion Laboratory, European Space Agency, NASA, JPL, Caltech, University of Montpellier, Hubble, , CNN Space, Science Locations: Pasadena , California, United States, Brazil's Santa Catarina, Brazil, France, British
CNN —Megalodons, the huge prehistoric sharks depicted in movies such as “The Meg,” had more slender bodies than was previously thought, according to a new study. Many mysteries remain about the biology of megalodons, but until now, great white sharks had been used to model their appearance. The dark grey silhouette depicts the previously reconstructed body form, based on the great white shark. Kenshu Shimada/DePaul UniversityThis new research is based on the reappraisal of an incomplete set of fossil vertebrae found in Belgium. The research suggests that “the modern great white shark may not necessarily serve as a good modern analog for assessing at least certain aspects” of megalodon biology, said Shimada.
Persons: CNN — Megalodons, Meg, , Kenshu Shimada, Phillip Sternes, megalodons, megalodon, Shimada, ” Shimada, Organizations: CNN, DePaul University in, University of California, DePaul University Locations: DePaul University in Chicago, Riverside, Belgium
For the unlucky few who experience shark attacks, the ordeal is undoubtedly terrifying. Yet every summer, stories about shark attacks top homepages. Unlike shark attacks on humans, which are mainly attributed to curiosity, we know exactly what we’re doing. Throughout, the great white is characterized as a dogged predator obsessed with human flesh. I’d never suggest that the victims of shark attacks had it coming, or that cinemagoers should feel an iota of shame.
Persons: Holly Thomas, Katie Couric, Holly Thomas Holly Thomas, Kyle Van Houtan, Peter Benchley, Steven Spielberg’s, Brody’s, Jonas Taylor, Jason Statham, Taylor, I’d Organizations: Katie Couric Media, CNN, New Yorker, Florida Museum, Natural, Monterey Bay Aquarium, Oceanographic Magazine, Twitter, Facebook Locations: London, New York City, New, finning, Monterey, Amity Island’s
While analysis of DNA is one factor, archaeologists have relied on other clues to gain insight, such as grave goods. European archaeologists made a “spectacular” find in 2008 of a tomb near Seville, Spain, that belonged to an ancient individual of great importance. The Ivory Lady, who possibly held a leadership role, was likely revered by her society for generations after she died. Defying gravityThe Perseverance rover snapped a new image of the Ingenuity helicopter on Mars on April 16. As Ingenuity and the Perseverance rover begin to explore more challenging terrain, obstacles can block communications between the two — and Perseverance is the only one that can “call” Earth.
Persons: CNN — Piecing, Ivory Lady, , Graves, Leonardo García Sanjuán, Tom Booth, James Webb, — Doodles, Henry VIII, Ashley Strickland, Katie Hunt Organizations: CNN, Research, University of Sevilla, University of Seville, SpaceX, Boca, NASA, JPL, Caltech, ASU, Mars, James Webb Space Telescope, CNN Space, Science Locations: Seville, Spain, Boca Chica, Texas, Wild, Hong Kong, Indonesia
Scientists previously theorized that megalodons were warm-blooded, but the new study is the first to provide concrete evidence to that effect. From this finding, they deduced the megalodon’s average body temperature was about 27 C (80 F). Like modern great white and mako sharks, megalodons were regionally endothermic, which means they had the ability to regulate temperature in certain parts of the body, according to the study. The timing of megalodons’ extinction coincides with the cooling of the Earth’s temperature, the researchers said. But learning more about the ancient shark could still help scientists better understand the threats similar marine animals face today.
Persons: CNN —, it’s, , megalodon, Robert Eagle, Kenshu Shimada, ” Shimada, Megalodon, Michael Griffiths, ” Griffiths Organizations: CNN, National Academy of Sciences, UCLA, Eagle, DePaul University in, William Paterson University Locations: megalodon, DePaul University in Chicago, , Megalodon, New Jersey
A charter boat captain found a whopping 6.25-inch long megalodon shark tooth in Florida. That's why today, the Sarasota County coastline in Venice, Florida, is known as the shark tooth capital of the world. Recently, a charter boat captain discovered one of the largest fossilized shark teeth ever from a megalodon shark. One of the largest megalodon teeth ever discoveredMichael Nastasio, who has been hunting shark teeth in Florida for 12 years, discovered a fully-intact megalodon shark tooth that was 6.25 inches (15.87 cm) long — only about an inch smaller than the largest megalodon tooth on record. Megalodon teeth are similar to great white shark teeth, and it's thought the two species may have been close relatives.
Persons: , Michael Nastasio, Kristen Grace, Nastasio, Jack Cooper, it's, Victor Habbick, Victor Perez, Cooper, Emma Bernard, wouldn't, he's, WTSP Organizations: Service, Swansea University, Environmental Studies, St, Mary's College of Maryland Locations: Florida, Sarasota, Venice , Florida, London
Scan finds megalodon tooth necklace in Titanic wreck
  + stars: | 2023-05-31 | by ( Jack Guy | ) edition.cnn.com   time to read: +2 min
CNN —A necklace carrying the tooth of a prehistoric shark known as a megalodon has been discovered in the wreckage of the Titanic during a digital scan of the sunken ship. For more than 100 years, the necklace has sat at the bottom of the ocean following the sinking of the Titanic in 1912, according to Magellan, a deep water investigation company that carried out the scan. Images from the scan show a gold necklace with a tooth of a megalodon, scientifically known as Otodus megalodon, a prehistoric shark that lived more than 23 million years ago. The necklace was discovered by Magellan during a project to produce a full-size digital scan of the Titanic, which the company says is the largest underwater scanning project in history. The megalodon tooth necklace is pictured in the center of this image.
Persons: Richard Parkinson, Magellan, ” Parkinson, , Organizations: CNN, ITV, Atlantic Productions, Locations: Magellan, there’s, Canada
Summer movie preview 2023
  + stars: | 2023-05-05 | by ( Dan Heching | ) edition.cnn.com   time to read: +12 min
CNN —Most moviegoers can pinpoint one summer movie – or perhaps, a summer of movies – in their formative years that really and truly cemented their love for going to the cinema, whether it be 1975’s “Jaws,” “E.T. And while streaming has clearly siphoned off part of the audience, particularly for more serious films, what we think of as “summer movies” still have the potential to rake in cash just like the old days. (CNN and DC are both part of the same parent company, Warner Bros. Courtesy Warner Bros. PicturesInitially meant for streaming platforms, this vehicle will herald the cinematic arrival of DC Studios’ first Latino superhero, played by Xolo Maridueña of “Cobra Kai” and “Parenthood” fame. If the fast-paced trailer is any indication, the movie looks sure to whisk those dog days of summer doldrums away quite nicely.
Here are facts that "Jaws," "Finding Nemo," and "The Meg" got wrong — and one that's right. NOAA fisheriesIt's those scales that make the shark nose the wrong target for a sucker punch. When Dory hits her nose, her blood goes straight into the shark's nose. So "Finding Nemo" hit the nail on the head when they showed blood actually going into the shark's nose, she said. Gerard Soury/Getty ImagesSharks in "Finding Nemo" might want to fight their urges to eat fish, but it's not in their nature.
Sursa foto: fox13news.comUn american a fost mușcat de cap de un aligator, în timp ce făcea scufundăriJeffrey Heim, un scafandru care caută dinți de rechin preistorici în râul Myakka din Florida, SUA, a scăpat cu viață după ce un aligator l-a mușcat de cap. În vârstă de 25 de ani, Jeffrey Heim a crezut inițial că a fost lovit de o elice de barcă, până a observat aligatorul care se uita la el. Bărbatul spune că a glumit pe seama evenimentului, dar a conștientizat prin ce a trecut când a ajuns la spital. Înainte de a face o tomografie computerizată, el și-a dat seama cât de norocos a fost că a supraviețuit acestui atac. O femelă aligator de peste 6 metri a fost capturată în zonă, iar o capcană a fost pusă pentru prinderea unui alt aligator din apropiere.
Persons: Jeffrey Heim, Heim . Heim, Heim, Dumnezeu, . Heim Organizations: CNN Locations: Florida, SUA, Sarasota
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