Articles tagged with Feather Evolution
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Researchers found that inhibiting the sonic hedgehog pathway restricts feather bud outgrowth and branching in chickens. Temporarily modified Shh expression resulted in proto-featherlike structures, highlighting the pathway's importance in feather development.
Researchers have discovered that a specific gene pathway is crucial for feather formation, dating back to the origins of proto-feathers in dinosaurs. The study provides insights into how genetic interactions evolved to allow for the emergence of complex structures like feathers.
Researchers compared feathers and bodies of flightless birds and their flying relatives, finding that some features change relatively quickly. The study sheds light on evolution of complex traits that lose original function, and could help reveal which fossil birds were flightless.
The Yixian Formation fossils in China are preserved due to rapid sedimentation and oxygen-free pockets, rather than volcanic events. The study's findings suggest that multiple periods of intense rainfall led to the burial of deceased creatures, preserving soft tissues.
Researchers used a family tree of 9,409 bird species to explore the spread of color across the globe. They found that iridescence originated outside of the tropics and in most cases arose 415 times across the bird tree of life, suggesting the common ancestor of all modern birds likely had iridescent feathers too.
Scientists discovered a common trait among flying birds, including the number of primary feathers, to determine their evolutionary history. The finding provides clues about dinosaur flight and may inform debates on its origins.
Researchers used a robot dinosaur named Robopteryx to test the hypothesis that small dinosaurs flapped their primitive wings to scare prey. The results showed significant positive associations between the use of proto-wings in display behavior and the likelihood of grasshoppers fleeing.
New research reveals similarities between dinosaurs and birds in terms of protein composition in their feathers. Analysis of fossil feathers from Sinornithosaurus and Confuciusornis showed beta-proteins, similar to those found in modern bird feathers.
Researchers studying ancient bird fossils discovered that molting, the process of shedding and regrowing feathers, was more complex than previously thought. The discovery sheds light on how ancient birds, including those that survived the mass extinction event, developed this crucial survival strategy.
Researchers have discovered a natural nanostructure in birds that produces iridescent shimmer, finding an evolutionary tweak in feather nanostructure that has more than doubled the range of iridescent colors. This insight could inspire new materials that capture or manipulate light.
The newly discovered dinosaur, Ubirajara jubatus, boasts long fur down its back and stiff ribbons projecting from its shoulders. Its unique features suggest that it may have used these to attract mates or intimidate rivals.
The discovery of feather sheaths on the Archaeopteryx fossil provides evidence of a sequential centre-out moulting strategy, used by modern falcons to preserve maximum flight performance. This finding sheds light on the evolution of flight in birds and suggests that this strategy was present at the earliest origins of flight.
A new study provides substantial evidence that a Jurassic fossil feather belongs to the iconic Archaeopteryx, a bird-like dinosaur. The research found that the feather matches a type of wing feather called a primary covert, identical in size and shape to those on an Archaeopteryx wing.
Pterosaur experts refuted earlier claims of feathered pterosaurs, suggesting they were bald instead. The finding has huge implications for the evolution of feathers in dinosaurs and pterosaurs.
The publication provides a comprehensive overview of pennaraptoran theropods, covering their fossil record, systematics, anatomy, and early flight studies. Key findings include the identification of key avian traits that originated deep within theropod evolution and the discovery of unique reproductive strategies.
Researchers discovered microscopic feather features in cassowaries, revealing the mechanism behind their glossy black shine. They also analyzed a 52-million-year-old fossil bird's feathers, finding structural colors that challenge previous assumptions about extinct species.
A new feathered dinosaur species, Dineobellator notohesperus, has been discovered in New Mexico, providing insights into the paleo-biodiversity of the American Southwest. The species, a member of the dromaeosaurid group, had feathers, flexible arms and hands, and a unique tail with a stiffened base.
A study by USC researchers reveals the common core design of feathers across 21 bird species, with options for specialized performance. The findings hold promise for engineers seeking better ways to build drones and other advanced materials.
Fossilized dinosaur and bird feathers from Australia provide the first record of feathered polar dinosaurs, showing diversity of proto-feathers for insulation. Microscopic analysis reveals melanosomes indicating possible dark colors for camouflage and heat absorbance in cold climates.
A new species of Jurassic scansoriopterygid dinosaur with associated feathers and membranous tissues has been discovered, providing new insights into the origin of flight in Dinosauria. The well-preserved skeleton of Ambopteryx longibrachium preserves a unique wing structure supported by a rod-like wrist bone.
A 125 million-year-old fossil of a bird hatchling has revealed feathers, confirming it was 'precocial' and 'out of the egg running'. The discovery uses laser imaging technology to uncover previously unknown feathering in the fossil specimen.
Researchers discovered that EDA/EDAR signaling drives the wave of patterning, while FGF20 induces cell aggregation and compresses the epidermis to intensify FGF20 expression. This process shapes the precise hexagonal array of feathers in birds.
A 150-year-old fossil feather has been re-examined using Laser-Stimulated Fluorescence (LSF) technology, resolving the debate over its origin. The study reveals that the feather did not belong to Archaeopteryx but instead came from an unknown feathered dinosaur.
A team of researchers analyzed Anchiornis feathers to understand the evolution of flight in dinosaurs and birds. They found that Anchiornis feathers contained both beta-keratins and alpha-keratins, a combination not seen in modern feathers.
A new study reveals that Anchiornis, one of the earliest known feathered dinosaurs, had feathers with thicker alpha-keratins instead of beta-keratins, lacking necessary biomechanical properties for flight. However, its molecular composition may signify an intermediate stage in the evolution of avian flight feathers.
A new study published in Nature Ecology & Evolution reveals that pterosaurs had at least four types of feathers, including simple filaments and down feathers, which are also found in modern birds and dinosaur groups. The discovery pushes back the origin of feathers by approximately 70 million years.
Researchers discovered four kinds of pterosaur feathers, similar to those found in birds and dinosaurs. These findings push the origin of feathers back to 250 million years ago, revealing a key moment in life's evolution.
Researchers studied 97 modern bird species with iridescent plumage, finding diverse melanosomes that produce varying colors. The study predicts fossil birds may have had similar iridescent displays, revealing new insights into dinosaur behavior.
Scientists have discovered an ancient whale that lacked teeth and baleen, revealing a surprising intermediate step in the evolution of this innovative feeding strategy. The newly described fossil, Maiabalaena nesbittae, lived about 33 million years ago and likely had strong cheeks and a retractable tongue.
A newly discovered extinct bird species, Jinguofortis perplexus, sheds light on early flight development and evolutionary variation. The fossil's unique traits, including a fused shoulder girdle, suggest different flying styles during the Cretaceous period.
Researchers at the University of Bristol have developed a new experimental protocol to create synthetic fossils in the lab. This method uses sediment filtration to mimic the conditions of deep burial and has successfully preserved soft tissues, including feathers and leaves, similar to exceptional fossils. The findings offer insights i...
Researchers at Field Museum create 'Easy-Bake fossils' by simulating the fossilization process in a lab, allowing for more accurate interpretations of ancient organisms. The method enables scientists to study the preservation of soft tissues and biomolecules, shedding light on evolution and biology.
The newly discovered species of dinosaur, Caihong juji, had rainbow-colored feathers that shimmered and shifted in the light. Its unique feather structure was matched to modern birds with similarly shaped melanosomes, indicating a prehistoric version of a peacock's iridescent tail.
A newly discovered dinosaur fossil from China contains evidence that a tiny bird-like dinosaur may have used its flashy neck feathers and a bony crest on its snout to attract mates. The discovery provides the earliest evidence of iridescence in dinosaurs, which is similar to that found in hummingbird species today.
A University of Bristol-led study has revealed new details about the ancient dinosaur Anchiornis, including its fluffy and primitive feathers. The findings suggest that the animal's feathers would have increased drag when gliding and affected its ability to control temperature and repel water.
Researchers identified key genes involved in scale and feather development, demonstrating their ability to convert scales into feathers by turning on specific molecular circuits. The study reveals five morpho-regulatory modules essential for modern feather formation and potentially explains how early birds evolved flight.
Researchers confirm Sinosauropteryx had striped tail and 'bandit mask', suggesting it lived in open habitats. The dinosaur's countershaded body revealed its habitat was not dense forest but rather more open terrain.
Researchers have discovered a dinosaur tail complete with its feathers trapped in a piece of amber. The tail, from a juvenile theropod, is surrounded by feathers that preserve 3D and microscopic detail.
Researchers have found evidence of preserved keratin and melanosomes in a 130-million-year-old bird fossil, extending the timeframe for molecular preservation. The discovery supports the identity of ancient microstructures and sheds new light on feather evolution.
A team of international scientists has discovered beta-keratin in a 130 million-year-old bird feather fossil, providing evidence that melanosomes are present in these structures. This finding sheds new light on the molecular preservation of tissues in ancient fossils.
Researchers discovered two genes, Pitx1 and Tbx5, responsible for developing feathered feet in pigeons. The study suggests that these genes may have played a role in the evolution of feathers in dinosaurs and early birds. The findings provide insight into how skin regions can be controlled to produce scales or feathers.
A recent discovery of an Ornithomimus dinosaur with preserved tail feathers and soft tissue is shedding light on the convergent evolution between dinosaurs and birds. The findings suggest that these dinosaurs used feathered regions to regulate body temperature, similar to modern ostriches.
Scientists utilize advanced molecular techniques to clarify dinosaur color, distinguishing melanosomes from microbial coats. By analyzing keratin and ToF-SIMS results, researchers confirm the presence of melanin in fossilized feathers, shedding light on ancient color patterns.
A newly identified species of feathered dinosaur has been found to have complex, quill pen-like feathers and short wings, challenging previous assumptions about the diversity of winged dinosaurs. The discovery, published in Scientific Reports, provides new insights into the evolution and biology of these fascinating creatures.
A team of scientists has developed a method using commercial-grade laser equipment to find and analyze fossils of dinosaurs, revealing complex details unseen with traditional visual enhancers. The technique causes fossil samples to fluoresce, allowing for the detection of fakes and the identification of new species.
Research reveals that the variety and adaptability of interlocking protein building blocks make up the feather's success. Birds have dozens of smaller variations within each type of brick, represented by the many differing copy numbers in their gene.
New research reconstructs Archaeopteryx feather color as matte black with darker tip, shedding light on fossil preservation. Advanced imaging technologies provide definitive proof of melanosomes in fossil record.
Dinosaurs had highly developed color vision, including the ability to see ultraviolet light, which likely contributed to the evolution of feathers. This discovery sheds new light on the origin of feathers and their role in dinosaur communication and mating.
A new raptorial dinosaur fossil named Changyuraptor yangi has shed light on how larger-bodied dinosaurs took to the air, with exceptionally long feathers playing a crucial role in safe landings. The 125-million-year-old fossil, found in China, confirms that flight preceded the origin of birds and was not limited to small animals.
Researchers analyzed the plumage of a newly discovered Archaeopteryx specimen, revealing previously unknown features of its feathers. The findings suggest that feathers evolved for functions other than flight, such as insulation and display, before being co-opted for aerial abilities.
New research from North Carolina State University suggests that it is not yet possible to tell if microscopic structures in fossilized feathers are melanosomes, which contain pigment, or ancient bacteria. Researchers used various microscopy techniques to examine the structures and compared them to melanosomes found in living birds.
Researchers found that chimpanzees with similar personality types spent more time together, suggesting a preference for self-like friends. This similarity in gregariousness and boldness may be adaptive, ensuring reliable cooperation between partners.
A study on feathered dinosaurs, including Microraptor, has provided new insight into the evolution of bird flight. The researchers found that high lift coefficient and aerodynamic efficiency are not the only factors determining gliding efficiency.
Researchers at The University of Manchester used X-ray experiments to reveal new insights into the evolution of plumage and preservation of feathers in ancient birds. They found chemical traces of original 'dinobird' and dilute pigments, shedding light on the bird's plumage pattern.
The study analyzed chemical traces from the first complete Archaeopteryx feather, revealing a patterned plumage. The findings contradict previous assumptions that all feathers were black and provide crucial insights into the evolution of bird feathers.
Researchers found evidence that some feathered dinosaurs, such as oviraptors, used their tail feathers to attract mates and engage in visual exhibitions. The discovery provides insight into the evolution of feathers in dinosaurs and their similarity to modern birds.
A new study on bird-like dinosaurs reveals that feathers were initially developed for insulation before evolving into a more complex wing structure. The research, published in Current Biology, explores the early evolution of bird flight and how it relates to dinosaur forelimbs.
Academics studied earliest theropod dinosaurs and found that feathers initially developed for insulation, evolving into display and camouflage features. This basic wing configuration has remained largely unchanged for 130 million years.
The study reveals that early bird ancestors had more primitive wing designs, with simpler feathers that were different from those of modern birds. The researchers believe that these early wings may have worked effectively for gliding and high-speed flapping flight, but not for low-speed flight or ground takeoff.
Researchers have discovered fossils of the first feathered dinosaurs from North America, shedding light on their wing use. The discovery provides evidence that these dinosaurs had feathers and wings, challenging previous depictions in popular media.