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Oldest Octopus Fossil Reclassified as Nautilus Relative

Oldest Octopus Fossil Reclassified as Nautilus Relative

A 300-million-year-old fossil, previously thought to be the world's oldest octopus, has been reclassified as a nautilus relative. The fossil, named Pohlsepia mazonensis, was found near Chicago, Illinois, and has puzzled scientists for years due to its octopus-like appearance. Recent studies using advanced imaging techniques revealed anatomical features inconsistent with octopus anatomy, such as a radula with 11 teeth per row, leading to its reclassification. This discovery was made possible by new technologies like synchrotron imaging, which provided detailed insights into the fossil's structure.
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Discovery of 250-Million-Year-Old Fossil Reveals Egg-Laying in Mammal Ancestors

Discovery of 250-Million-Year-Old Fossil Reveals Egg-Laying in Mammal Ancestors

A groundbreaking discovery has been made regarding the reproductive strategies of Lystrosaurus, a mammal ancestor that thrived after the End-Permian Mass Extinction 252 million years ago. Researchers have identified an egg containing an embryo of Lystrosaurus, providing the first direct evidence that these ancestors laid eggs. This discovery was made possible through advanced synchrotron X-ray CT technology, which allowed scientists to examine the fossil in detail. The study suggests that Lystrosaurus laid large, yolk-rich eggs, which were likely soft-shelled, making them difficult to fossilize. This reproductive strategy enabled Lystrosaurus to survive in harsh, drought-prone environments by producing precocial young capable of independent survival.
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World's Oldest Octopus Fossil Reclassified as Nautilus Relative

World's Oldest Octopus Fossil Reclassified as Nautilus Relative

Scientists have determined that a 300-million-year-old fossil previously thought to be the world's oldest octopus is actually a relative of the nautilus. The fossil, known as Pohlsepia mazonensis, was reclassified after researchers found a ribbon of teeth common to nautiluses but not octopuses. This discovery challenges previous assumptions about the evolution of cephalopods and suggests that octopuses may have emerged much later than previously believed.
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Analysis-Iran war leaves crisis-scarred countries counting the cost

Analysis-Iran war leaves crisis-scarred countries counting the cost

By Marc Jones, Uditha Jayasinghe and Ariba Shahid LONDON/COLOMBO/ISLAMABAD, April 10 (Reuters) - Sanoj Weeratunge thought this would finally be the year his tour firm put Sri Lanka's spate of crises behind it.
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Cómo distintas culturas interpretan las muelas del juicio

Cómo distintas culturas interpretan las muelas del juicio

Las muelas del juicio no solo son un fenómeno biológico, sino que también tienen un significado cultural y simbólico en diversas sociedades. A menu...
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Harvard Paleontologist Identifies 500-Million-Year-Old Predator, Rewrites Spider Evolution

Harvard Paleontologist Identifies 500-Million-Year-Old Predator, Rewrites Spider Evolution

A fossil discovered over 40 years ago in Utah has been re-examined and identified as a new species of chelicerate, named Megachelicerax cousteaui. This discovery, made by Harvard University paleontologist Rudy Lerosey-Aubril, pushes back the origins of chelicerates, the arthropod group that includes spiders and horseshoe crabs, by 20 million years to the Cambrian period. The fossil features massive, three-segmented chelicerae, which are pincer-like appendages, confirming its classification as a chelicerate. The study, published in Nature, highlights the anatomical complexity of arthropods during the Cambrian era.
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Reclassification of Ancient Fossil Alters Octopus Evolution Timeline

Reclassification of Ancient Fossil Alters Octopus Evolution Timeline

The fossil Pohlsepia mazonensis, once thought to be the oldest known octopus, has been reclassified as a nautiloid, a shelled cephalopod. This discovery, made using advanced imaging techniques, challenges previous understandings of octopus evolution. The fossil, found in Illinois, was initially identified as an octopus due to its decomposed state, which made it appear octopus-like. However, new evidence shows it possesses features typical of nautiloids. This reclassification pushes the record of nautiloid soft tissue back by 220 million years and alters the timeline for octopus evolution.
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Scientists Reclassify World's Oldest Octopus Fossil as Nautilus Relative

Scientists Reclassify World's Oldest Octopus Fossil as Nautilus Relative

A 300-million-year-old fossil previously identified as the world's oldest octopus has been reclassified as a relative of the nautilus. The fossil, known as Pohlsepia mazonensis, was found in Illinois and initially thought to be an octopus, challenging previous understandings of octopus evolution. However, recent research led by University of Reading zoologist Thomas Clements used advanced imaging techniques to reveal features inconsistent with octopuses, such as a radula with 11 teeth, compared to the seven or nine found in octopuses. This discovery has led Guinness World Records to retract its listing of Pohlsepia mazonensis as the earliest known octopus.
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Scientists say the world's oldest octopus fossil isn't an octopus after all

Scientists say the world's oldest octopus fossil isn't an octopus after all

Scientists have found evidence that a 300-million-year-old sea creature previously thought to be the world's oldest octopus is actually a nautilus relative
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Scientists Reclassify Fossil Once Thought to Be World's Oldest Octopus

Scientists Reclassify Fossil Once Thought to Be World's Oldest Octopus

A fossil previously believed to be the oldest octopus ever discovered has been reclassified after new analysis revealed it is not an octopus but a nautiloid. The specimen, known as Pohlsepia mazonensis, was initially identified as an octopus due to its appearance, which resulted from decomposition before fossilization. Researchers used advanced synchrotron imaging to uncover tooth-like structures within the fossil, leading to the conclusion that it belongs to a group related to modern Nautilus. This discovery, published in Proceedings of the Royal Society B, provides the earliest known example of preserved soft tissue from a nautiloid and alters the timeline for octopus evolution, suggesting octopuses appeared much later during the Jurassic period.
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Groups by Beyond Launches New Touring Programs in Africa and the Middle East

Groups by Beyond Launches New Touring Programs in Africa and the Middle East

Groups by Beyond Launches New Touring Programs in Africa and the Middle East