Articles tagged with Dinosaurs
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
A new spinosaurid dinosaur from Portugal's early Cretaceous period had a distinctive crocodile-like skull and a spiny back. The species, which lived over 125 million years ago, may have been a wading fish-eater, adding to our understanding of spinosaurid evolution.
A young diplodocid dinosaur with abnormal bony protrusions in its neck bones may have suffered from a fungal respiratory infection similar to aspergillosis. The study provides the first evidence of an avian-style respiratory infection in a non-avian dinosaur.
Researchers discovered abnormal bone growths in a 150-million-year-old diplodocid dinosaur, suggesting an avian-style respiratory infection. The infection likely caused symptoms like coughing, trouble breathing, and fever, potentially leading to the animal's death.
A new species of titanosaur dinosaur, Abditosaurus kuehnei, has been discovered in the Pyrenees with a semiarticulated 70.5-million-year-old skeleton being the most complete specimen found so far in Europe. The species is estimated to be 17.5 meters long and 14,000 kg heavy, representing a senescent individual.
A study on Ankylosaurus austriacus, a nodosaurid dinosaur from Austria, found that its brain was similar to those of its relatives, but with a small flocculus indicating poor balance. The dinosaur's auditory capacities were also limited due to a short lagena, suggesting an exceptionally sluggish lifestyle.
A 72-66-million-year-old dinosaur embryo discovered in a fossilized egg is found to have a bird-like posture, similar to modern bird embryos. The discovery suggests that these postures may be an evolutionary precursor to the tucking behavior seen in modern birds.
The newly discovered dinosaur Vectiraptor greeni, from the Early Cretaceous period, was a large, heavily built relative of Velociraptor with powerful claws and serrated teeth. It is believed to have hunted larger prey, using its strength rather than speed.
A new bird-like dinosaur, Vectiraptor greeni, has been found in England, dating back to the Early Cretaceous period. The fossilized remains suggest a large and powerful animal with massive bones, which would have used brute strength to overpower its prey.
Researchers found that theropods strengthened their jaws through time, with expanding rear jaw portions and evolving different jaw shapes depending on diet. This allowed them to exploit a wider range of food items and minimized bone fracture risk.
A new study from the University of Texas at Austin suggests that extinct dinosaurs expressed bright colors on their beaks, legs, and around their eyes. The researchers analyzed data from living bird species and found a 50% chance that the common ancestor of birds and extinct dinosaurs had bright colors in its soft tissues.
A groundbreaking study confirms the timing of the Chicxulub asteroid impact, which occurred during the spring-summer growth phase, leading to the extinction of dinosaurs and 75% of life on Earth. The research team used multiple lines of evidence, including fossil pollen, index fossils, and radiometric dating, to pinpoint the exact time...
A new study in Scientific Reports reveals the first palaeontological site with multiple, exceptionally complete dinosaur skeletons from Italy. The Villaggio del Pescatore site in north-eastern Italy has yielded seven individuals of Tethyshadros insularis, the biggest and most complete dinosaur ever found in Italy.
A new genus and species of iguanodontian dinosaur, Brighstoneus simmondsi, has been discovered on the Isle of Wight. The herbivorous dinosaur is estimated to be around 8 meters in length and weigh 900kg.
Researchers discovered that sauropod dinosaurs had simple teeth despite being herbivores, with fast tooth replacement rates allowing them to eat a variety of plants. This unique adaptation allowed them to thrive alongside other plant-eaters without the need for complex teeth.
Researchers uncover fossil remains of Issi saaneq, a long-necked herbivore that lived on Greenland during the Late Triassic Period. The discovery sheds light on the evolutionary pathways and timeline of sauropods, iconic land animals that existed for nearly 150 million years.
Researchers from Syracuse University and UC Berkeley investigate the Late Ordovician mass extinction, finding that climate cooling combined with other factors likely led to the event. The study suggests that temperature change, rather than oxygen depletion, was the primary cause of the mass extinction.
A study published in Scientific Reports found fossilized remains of sauropodomorphs, including eggs and skeletal remains, that suggest the earliest evidence of herd living in dinosaurs. The fossils, dated to approximately 193 million years old, show age-specific clusters of individuals, indicating possible herding behavior.
A new study reveals that early dinosaurs, such as Mussaurus patagonicus, likely formed complex herds with adults foraging and taking care of young. Fossils found in southern Patagonia indicate an age segregation, suggesting a larger community structure where adults shared in raising the whole community.
Researchers developed a predictive tool using %V bur (min) to categorize phosphine structures as active or inactive in many experimental datasets. This advancement will facilitate organometallic chemistry and catalysis, enabling easier computation and prediction of phosphine reactivity.
A recent study suggests that primates and marsupials were among the few tree-dwelling mammals that survived an asteroid impact 66 million years ago. The researchers used computer models and fossil records to find that most surviving mammals did not rely on trees, but some arboreal species may have been versatile enough to adapt.
Researchers discovered an alternating pattern of tooth replacement in ancient birds, similar to dinosaurs and crocodilians. The study suggests that the genetic controls for tooth replacement survived even after the split between birds and crocodilians millions of years ago.
Scientists have discovered two new species of spinosaurid dinosaurs on the Isle of Wight, providing significant insights into the UK's spinosaurid population. The newly found fossils, including Ceratosuchops and Riparovenator, measure around nine meters in length and suggest a diverse ecosystem with multiple predators.
A new study found that four distinct episodes of volcanic activity coincided with significant environmental changes, including the Late Triassic Carnian Pluvial Episode, which drove animal and plant diversification. The research suggests that large volcanic eruptions had a profound impact on global temperature and humidity.
Scientists discovered a fossil bird with elaborate tail feathers, showing how natural and sexual selection influenced bird evolution. The discovery sheds light on the balance between traits that aid survival and those used for display.
A new study describes two dinosaurs from Appalachia, including a tyrannosaur with distinct features and a herbivorous hadrosaur, providing insight into the evolution of Eastern North American dinosaurs. These fossils help fill a gap in the fossil record and demonstrate geographic isolation's impact on dinosaur evolution.
Researchers used CT scans to digitally reconstruct the brain, inner ear, and surrounding bones of two well-preserved Daspletosaurus specimens, finding more variation in braincase structure than expected. The study suggests that these variations may provide insights into the sensory biology and life of the dinosaur.
Three new fossil mammal species, including Beornus honeyi, Miniconus jeanninae, and Conacodon hettingeri, have been discovered at an ancient riverbed site in southern Wyoming. The species lived after a mass extinction event and were ancestors of today's hoofed animals.
Scientists have discovered three new dinosaur fossils in Northwest China, representing two new species: Silutitan sinensis and Hamititan xinjiangensis. The findings shed light on sauropods in the region and increase the known diversity of Mesozoic reptiles in the area.
A study published in PLOS Biology found that shark diversity remained relatively constant during the mass extinction event at the end of the Cretaceous period. However, some groups of apex predators suffered selective extinctions, while others increased in diversity after the K-Pg boundary.
A new species of pterosaur, Thapunngaka shawi, was discovered in Queensland with a 7-meter wingspan, showcasing the fearsome beast's spear-like mouth and powerful flight capabilities. The fossil, found on Wanamara Country, near Richmond, contributes to Australia's understanding of pterosaur diversity.
Paleobotanists describe two new genera of ancient conifers based on beautifully preserved fossil seed cones from the Upper Cretaceous of Hokkaido, Japan. The discovery sheds light on the diversity and decline of cunninghamioid conifers during the Cretaceous period.
Researchers discovered a rare bird fossil with nearly complete skull, allowing them to compare ancient bird brains to living birds. The study suggests that complex brain structure may have played a key role in the survival of bird ancestors during the mass extinction event.
Researchers found that large asteroids from the outer half of the main asteroid belt strike Earth at least 10 times more often than previously calculated
A hadrosaur, known as Bonapartesaurus rionegrensis, was found to have a tumor on its foot and two fractures in its tail. Despite these severe injuries, the dinosaur managed to survive for some time before its death, possibly due to infections or further trauma.
A new iguanodon-like dinosaur has been identified from a jawbone fossil in Spain. The creature is believed to have been around 6-8m long and was closely related to species found in modern-day China and Niger.
A 200-million-year-old South African dinosaur, Heterodontosaurus tucki, breathed by expanding its chest and belly, unlike birds which use air sacs. This discovery sheds light on the evolution of how dinosaurs breathed and could help paleontologists understand what features allowed certain species to survive or go extinct.
Alvarezsaur dinosaurs reduced in size from turkey-sized to chicken-sized around 95 million years ago when they transitioned to an ant-based diet. Their bodies also underwent significant changes, including modified claws and a shift from flesh-eating to termite consumption.
A team of researchers found an unexpected collection of fossilized shark teeth, dated to around 80 million years ago, in a 2,900-year-old site in the City of David in Jerusalem. The teeth were likely transported from a distant location and assembled by collectors, possibly during the Iron Age period.
A new beetle species, Triamyxa coprolithica, has been found in 230-million-year-old fossil feces attributed to a dinosaur ancestor. The beetles were preserved in the coprolite fragment, providing a detailed description of the new genus and insights into early insect evolution.
Dinosaurs were in decline 76 million years ago due to extinctions outpacing speciations, with herbivores being particularly affected. The asteroid impact may have been the final blow, triggered by a 7°C drop in global temperature and changes in oceanic circulation patterns.
Researchers found dinosaur families evolving and expanding until 76 million years ago, when rates of extinction rose and new species formation slowed down. The team used Bayesian modelling techniques to account for uncertainties and found evidence of decline prior to the asteroid impact.
A research team from the University of Alaska Fairbanks and Florida State University has found evidence that nearly all types of Arctic dinosaurs reproduced in the region and likely remained there year-round. The discovery contradicts previous hypotheses that the animals migrated to lower latitudes for the winter, suggesting they were ...
Researchers found multiple dinosaur species that reproduced in Arctic, including hadrosaurids, ceratopsians, and tyrannosaurs. The discovery provides evidence of year-round residency by dinosaurs in extremely cold environments.
Australotitan, the southern titan, is Australia's largest dinosaur, reaching heights of 5-6.5 meters and lengths of 25-30 meters. The fossilised skeleton was discovered in Eromanga, southwest Queensland, and its scientific description marks a 17-year-long collaboration between Queensland Museum and Eromanga Natural History Museum.
A new study reveals that human impact on freshwater ecosystems is causing unprecedented rates of species loss, threatening entire ecosystems. The predicted recovery time for biodiversity decline may be longer than 12 million years, as seen in previous mass extinction events.
A new study suggests that it was not dinosaurs but other mammals that competed with modern mammals before and after the mass extinction of dinosaurs. The research identifies the evolutionary limits placed on different groups of mammals, revealing a more complex story of competition between distinct mammal groups.
A new study found that Massospondylus carinatus, a medium-sized southern African dinosaur, had growth variations from year to year. The dinosaur's growth directly responded to environmental conditions, with significant increases in good years and minimal growth in bad years.
Menefeeceratops sealeyi, a newly described horned dinosaur, lived in New Mexico 82 million years ago and is one of the earliest known ceratopsid species. The discovery provides important insights into the evolution of ceratopsid dinosaurs and their evolutionary relationships.
A new study from Yale University reveals that the shape of a dinosaur's inner ear can provide reliable signs about its behavior, including flying ability, movement, and parenting. The research found clusters of species with similar inner ear traits corresponding to their behaviors.
A new genus and species of hadrosaur, Yamatosaurus izanagii, has been identified in Japan, revealing insights into the herbivores' migration from Asia to North America. The discovery also highlights an evolutionary step as dinosaurs transitioned from bipedalism to quadrupedalism.
New research reveals that dinosaurs kept a joint in their lower jaw steady like an alligator, not flexible like a snake, to chomp through bone. The study's findings suggest that bones along the inside of the jaw acted as a strain sink to counteract bending at the intramandibular joint.
A researcher from the University of Malaga challenges a 2020 study suggesting powered flight may have evolved independently in non-avian dinosaurs. New data analysis by Francisco Serrano and Luis M. Chiappe refutes this hypothesis, stating that current evidence does not support it.
Researchers found that juvenile tyrannosaurs were slimmer and relatively faster for their body size compared to their massive parents. The study suggests that as these animals grew older, their feet became more bulky, aligning with previous findings on growth patterns.
A new study models the gait of Tyrannosaurus rex, revealing a preferred walking speed of 4.6 km/h, comparable to that of humans and other animals. The researchers applied resonance principles to the dinosaur's tail, which they found had a natural frequency, similar to a swing
A single footprint from a tiny cat-sized stegosaur has been discovered in China, revealing characteristics similar to other stegosaur footprints but with a heel-lifted gait. The finding suggests that young stegosaurs may have walked on two legs or used a 'toe-walking' posture.
The study uses Monte Carlo computer simulation to determine the population numbers of T. rexes, with a standing population size of 20,000 adults at any given time. The total number of individuals that existed over its lifetime could have been anywhere from 140 million to 42 billion.
The study provides precise geochronological constraints on the duration of the Yixian Formation and its units, revealing a shorter duration than previously estimated. The results suggest a rapid bio-diversification event during this period, supported by the exceptionally preserved volcanic-influenced ecosystem.
Researchers analyzed ankylosaurid skeleton from Mongolia's Baruungoyot Formation, finding evidence of adaptations for digging. The discovery sheds light on the behavior and habits of these ancient creatures.
Researchers found that stegosaurs ate tough food, likely plant-based, and had complex jaw movements, including a longitudinal phase. They also discovered that their teeth formed quickly, suggesting they may not have suffered from caries.
Researchers from the University of Bonn have developed a new method to identify and separate individual dinosaur fossils by analyzing bone tissue. By examining the growth patterns, vascularization, and annual rings in fossilized bones, scientists can now determine whether a particular bone belongs to a specific animal or skeleton.