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Oldest ant ever that lived with dinosaurs discovered. It's 113-million-year-old

Oldest ant ever that lived with dinosaurs discovered. It's 113-million-year-old

India Today25-04-2025
Scientists have developed the oldest ant that ever lived in northeastern Brazil and is aged 113 million years.The details published in the journal Current Biology make it the oldest ant specimen known to science. The hell ant, which was preserved in limestone, is a member of Haidomyrmecinae — an extinct subfamily that only lived during the Cretaceous period.'Our team has discovered a new fossil ant species representing the earliest undisputable geological record of ants,' said author Anderson Lepeco of Museu de Zoologia da Universidade de Sao Paulo.
The newly reported species represents the oldest definitive ant known to science. (Photo: Current Biology)
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The specimen was discovered while the researchers systematically examined one of the world's largest collections of fossil insects from the Crato Formation. It's a deposit renowned for its exceptional fossil preservation. The collection is housed at the Museu de Zoologia da Universidade de So Paulo.The discovery challenges the knowledge around the evolution of ants and their biogeography through time. The previous oldest ants were found in France and Burma and were preserved in amber instead of limestone.'What makes this discovery particularly interesting is that it belongs to the extinct 'hell ant,' known for their bizarre predatory adaptations. Despite being part of an ancient lineage, this species already displayed highly specialized anatomical features, suggesting unique hunting behaviours," Anderson added.The existence of a hell ant in Brazil shows that ants were already widely distributed and diversified early in their evolution, says the team.
It's the most complete evidence for the early evolution of ants in the fossil record. (Photo: Current Biology)
advertisement'Even though there have been hell ants described from amber, this was the first time we could visualise this in a rock fossil,' said Lepeco.The team conducted Micro-computed tomography imaging — a 3D imaging technique that uses X-rays to view the inside of an object. They found that the newly discovered ant was closely related to hell ants previously known only from specimens preserved in Burmese amber — a type of amber found in Myanmar.'While we expected to find hell ant features, we were shocked by the characteristics of its feeding apparatus. The intricate morphology suggests that even these earliest ants had already evolved sophisticated predatory strategies significantly different from their modern counterparts," researchers added.
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New study finds 117-million-year-old geological formations rewriting Atlantic Ocean history
New study finds 117-million-year-old geological formations rewriting Atlantic Ocean history

Time of India

time6 days ago

  • Time of India

New study finds 117-million-year-old geological formations rewriting Atlantic Ocean history

Buried nearly a kilometre beneath the Atlantic seabed west of Guinea-Bissau lies a geological time-capsule: gigantic 117-million-year-old mud waves sculpted by dense, underwater avalanches. A new study published in Global and Planetary Change reveals that these ancient structures were formed when early Atlantic waters carved through the Earth's crust, much earlier than previously believed. This discovery reshapes our understanding of Atlantic Ocean formation, offers fresh perspectives on Cretaceous climate shifts, and provides clues to tectonic movements that governed our planet's evolving geography. From deep-sea sediment patterns to global carbon cycles, these mud waves, once hidden, now tell a story with far-reaching implications for modern geology and climate science. Underwater mud waves push the Atlantic's birth date back to 117 million years ago Recent research published in Global and Planetary Change (2025) by Duarte, Nicholson, and colleagues has shed new light on the early history of the Atlantic Ocean. Using a combination of modern seismic imaging and archived drilling data from 1975, the team identified a series of massive 117-million-year-old mud waves buried deep beneath the Atlantic seafloor. These geological giants, stretching over a kilometer in length and rising hundreds of meters high, were formed when dense, salty water from the young North Atlantic spilled into the deeper southern basins, creating powerful underwater currents. The composition and layering of these mud waves reveal that such flows occurred far earlier than previously believed, suggesting that the Equatorial Atlantic Gateway, the oceanic passage linking the northern and southern Atlantic opened sooner than most geological models predicted. This pushes back the estimated timeline of when the Atlantic became a fully connected ocean, making the discovery a crucial piece in reconstructing Earth's plate tectonic and oceanographic history. Not only does this finding refine our understanding of how and when the Atlantic took shape, but it also offers insights into the role of deep-water currents in shaping the seafloor over millions of years. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like This new air conditioner cools down a room in just seconds News of the Discovery Undo Sediment patterns illuminate early ocean currents and climate change The formation of these 117-million-year-old mud waves was far more than an isolated ocean-floor event, it represented a profound turning point in Earth's climate and geological history. When the young North Atlantic's saline waters finally breached into the long-isolated southern basins, they encountered dense, carbon-rich deep waters that had been locked away for millions of years. This sudden mixing unleashed colossal underwater mud avalanches, cascading across the seabed with immense force and reshaping the ocean floor's topography on a scale rarely seen in Earth's past. The consequences reached far beyond the geology. This tectonic–oceanic upheaval likely interrupted one of the planet's most important climate-regulating processes: the long-term burial of carbon in marine sediments. By disturbing these ancient, carbon-heavy layers, the event may have kept vast amounts of greenhouse gases circulating in the atmosphere, helping sustain the elevated global temperatures characteristic of the mid-Cretaceous, a period often referred to as one of Earth's 'greenhouse worlds.' Such persistent warmth not only influenced ocean chemistry and circulation but also shaped the evolution and distribution of marine life for millions of years afterward. Understanding precisely when the Equatorial Atlantic Gateway opened is therefore critical. It marks the moment the Atlantic transitioned from a series of isolated basins into a fully connected ocean, altering heat and nutrient flows on a global scale. By reconstructing this event, scientists can better model ancient ocean currents, climate feedback loops, and the deep-time mechanisms that still echo in today's climate system. In essence, these mud waves are not just relics of a vanished seafloor, they are a geological signature of the forces that have shaped, and continue to shape, Earth's climate trajectory. Why this discovery matters: from paleoceanography to climate modelling Knowing that the Atlantic began to take shape around 117 million years ago, evidence preserved in those colossal buried mud waves, significantly sharpens scientists' ability to model ancient ocean behaviour, tectonic shifts, and climate feedback loops. This revised timeline offers a clearer window into how early ocean gateways controlled the movement of heat across the planet, regulated carbon sequestration in marine sediments, and set the stage for long-term cooling or warming trends. By tracing these deep-time processes, researchers can better understand the intricate relationship between ocean circulation and Earth's climate system. Crucially, such knowledge is not confined to the past, it provides a framework for anticipating the effects of today's oceanic changes. From accelerating polar ice melt to shifting global currents, the same mechanisms that once shaped the Cretaceous world could, in altered form, dictate the trajectory of our future climate. Also read| Study reveals nature's hardest teeth: Chitons inspire future material design

Dinosaur teeth used to recreate prehistoric air for the first time
Dinosaur teeth used to recreate prehistoric air for the first time

Time of India

time06-08-2025

  • Time of India

Dinosaur teeth used to recreate prehistoric air for the first time

In a groundbreaking scientific breakthrough, researchers have successfully reconstructed the prehistoric atmosphere using fossilized dinosaur teeth . This achievement could reshape our understanding of Earth's ancient climate . Led by geochemist Dingsu Feng of the University of Göttingen, the international team analyzed oxygen isotopes preserved in the enamel of teeth from the Cretaceous and Jurassic periods. Their findings reveal not only the composition of the air dinosaurs once breathed but also hint at sudden, massive CO2 spikes likely linked to volcanic activity. The results provide a new method to study climate dynamics over deep time and understand extinction events. How dinosaur teeth preserve ancient atmospheric clues The study focused on the analysis of oxygen-17, a rare isotope that leaves behind telltale chemical signatures when inhaled by air-breathing vertebrates. Over millions of years, these signals remain preserved in durable tissues such as tooth enamel. Because teeth are less susceptible to environmental contamination, they serve as reliable time capsules of ancient biology and atmospheric conditions. Researchers examined previously collected tooth enamel powders from museum specimens across Europe, including those of Tyrannosaurus rex and Kaatedocus, a sauropod dinosaur. These samples held valuable information about oxygen ratios, which correlate with atmospheric CO2 concentrations. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like 15 Foods That Might Kill You Before Anything Else Does Undo CO2 levels in the age of dinosaurs Based on the isotope readings, scientists determined that atmospheric CO2 levels were far higher during the Mesozoic era than today. In the late Jurassic, CO2 concentrations reached about 1,200 parts per million (ppm). During the late Cretaceous, this figure dropped slightly to around 750 ppm. For comparison, modern atmospheric CO2 levels hover around 430 ppm. This confirms previous models suggesting that dinosaurs lived in a hotter, more carbon-rich world, largely influenced by natural processes such as plate tectonics and sustained volcanic activity. Volcanic activity and sudden climate changes A particularly fascinating discovery was the spike in isotope anomalies in two specific teeth—one from a T. rex and another from a Kaatedocus. These anomalies suggest short-lived but significant surges in atmospheric CO2. Scientists believe these may be linked to massive volcanic eruptions, such as flood basalt events, which released enormous amounts of CO2 in a short geological timeframe. Such findings support the idea that volcanic CO2 emissions played a major role in driving rapid climate changes, which may have affected ecosystems and evolutionary pressures on land-dwelling vertebrates. Implications for modern climate science The ability to reconstruct prehistoric air with such precision opens new doors for understanding both past and future climate patterns. By identifying CO2 fluctuations during the age of dinosaurs, researchers can refine models that predict how modern ecosystems might respond to accelerated carbon emissions. This study also highlights the potential of fossilized remains as archives of environmental data, giving scientists tools to trace how life and climate have co-evolved over hundreds of millions of years. Next target: The Great Dying Buoyed by their success, the team now plans to apply the same method to fossils from the Permian-Triassic extinction event, known as the Great Dying, which occurred 252 million years ago. This catastrophic period saw the extinction of over 90% of marine species and 70% of terrestrial life, likely due to prolonged volcanic eruptions in what is now Siberia. By analyzing teeth from this period, researchers hope to uncover how atmospheric CO2 behaved before, during, and after this global extinction, offering new clues into Earth's resilience and recovery mechanisms. From volcanic eruptions to global extinction events, dinosaur teeth have revealed more than just what these creatures ate. They've opened a window into the very air they breathed. This pioneering research underscores the power of modern geochemistry and paleontology to unravel the secrets of Earth's deep past, with implications that stretch far into the planet's uncertain climatic future.

Florida scientists are using robot rabbits to fight invasive Burmese pythons
Florida scientists are using robot rabbits to fight invasive Burmese pythons

Time of India

time06-08-2025

  • Time of India

Florida scientists are using robot rabbits to fight invasive Burmese pythons

High-tech decoys may be the key to saving Everglades wildlife from one of the region's deadliest predators. In the heart of the Florida Everglades, scientists are taking an unexpected and innovative approach to stop a growing ecological crisis. A new kind of animal is hopping into the fight against invasive species. But it's not here to run from predators. It's here to bait them. Researchers from the University of Florida have developed a surprising new tool to target the elusive and destructive Burmese python: robotic you read that right. These aren't toy props or simple decoys, they're highly engineered, lifelike replicas of one of the python's favourite prey animals. Packed with technology like internal heaters, solar-powered motion motors, and even sensor systems, these plush rabbit lookalikes are designed to mimic the heat, scent, and movement of real rabbits in the purpose? To lure Burmese pythons out of hiding, exposing them to researchers so they can be captured and removed before doing further damage to the fragile Everglades ecosystem. Unlike traditional methods, which rely on chance sightings, traps, or live bait, these robot rabbits offer a controlled, ethical, and efficient way to draw in one of Florida's most secretive predators. by Taboola by Taboola Sponsored Links Sponsored Links Promoted Links Promoted Links You May Like How to Ease Knee Pain Without Injections or Side Effects Learn More Undo As the python population continues to grow and native species continue to disappear, these high-tech decoys may offer a much-needed edge in a fight that Florida can't afford to lose. Why Burmese pythons are such a big problem in Florida The Burmese python is now considered one of the most ecologically destructive invasive species ever introduced to the United States. Native to the dense jungles and swamps of Southeast Asia, these massive snakes were originally brought to Florida through the exotic pet trade, prized for their size and striking patterns. But many owners underestimated just how large and unmanageable they could become. As a result, countless snakes were either intentionally released or escaped into the wild, especially after events like Hurricane Andrew in 1992 damaged pet facilities and zoos. Over the last two decades, the Burmese python population has exploded and with almost no natural predators in the Florida Everglades, they've taken over the ecosystem with devastating impact. In regions where these snakes have become established, populations of native mammals like marsh rabbits, raccoons, opossums, and even bobcats have plummeted by over 90%, according to National Park Service studies. The Everglades, once rich with biodiversity, are now eerily quiet in areas where pythons dominate. What makes these snakes especially dangerous is their stealth and sheer power. They are ambush predators, excellent swimmers, and can grow over 18 feet long, weighing up to 200 pounds. Their ability to hide in thick vegetation, combined with their nocturnal habits, makes them extremely difficult to track and remove using traditional methods. They reproduce rapidly, laying up to 100 eggs at a time, which allows the population to grow faster than efforts to control it. Florida officials and scientists have declared the Burmese python a top threat to the Everglades' survival, not just because of the animals they consume, but because of how completely they're reshaping the food web and natural balance of one of America's most fragile ecosystems. Enter the robot rabbits against the pythons: A smart, ethical solution To lure pythons into the open, researchers initially used live rabbits as bait. And while the strategy worked, it came with serious drawbacks. It was labour-intensive, requiring teams to monitor animals closely in difficult terrain, and it raised significant ethical and animal welfare concerns. Transporting, housing, and exposing live animals to predators wasn't just risky, it was unsustainable in the long run. So, the team at the University of Florida set out to create a better solution, one that was efficient, ethical, and effective. The result? A fleet of 40 high-tech robotic rabbits, specially engineered to mimic key characteristics that trigger python hunting instincts. These next-gen decoys are soft, rabbit-shaped replicas outfitted with advanced components, including: Internal heating elements that simulate the body warmth of a real rabbit Motion motors that create subtle, lifelike movements — like twitching or shifting weight Solar panels for sustainable power in remote, off-grid environments Sensors and tracking technology to monitor activity and gather field data in real time The aim is to replicate a live rabbit closely enough to fool even the sharp senses of a Burmese python. And if visual and heat cues alone aren't enough to provoke a strike, researchers plan to add a final touch, real rabbit scent, to complete the illusion. The ultimate goal is to trigger an attack response from the python. These snakes often remain hidden in dense vegetation, making them nearly impossible to spot. But once they move to strike, their position is revealed giving researchers a rare opportunity to locate, capture, and remove them from the ecosystem. This strategy not only reduces reliance on live animals, but also opens the door to repeatable, scalable field operations, where decoys can be deployed across large areas without constant human oversight. In short, it's a clever mix of biology, engineering, and ethical innovation and it may be exactly what Florida needs in the fight against one of its most elusive predators. Will robot rabbits actually work against the pythons So far, the early field tests are encouraging. Pythons are responding to the decoys, and researchers are refining the design based on real-world feedback. The idea is to create an affordable, scalable, and ethically sound method to bait and trap pythons more efficiently than ever before. And while robo-rabbits may sound like a quirky solution, they point to a much larger trend in wildlife conservation where robotics, AI, and ecological science intersect to solve real-world problems. The Florida Everglades is one of the most unique ecosystems on Earth and it's under serious threat. The unchecked spread of Burmese pythons has caused a collapse of local wildlife populations, and every year that goes by without effective control brings the region closer to ecological scientists are doing isn't just innovative, it's essential. And if a few robotic rabbits can help tip the balance? Even better. Also read| Why are snakes afraid of mongooses; nature's ultimate predator battle

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