Articles tagged with Dinosaurs
Researchers discovered that dinosaurs utilized their elaborate nasal passages as heat exchangers to maintain optimal brain temperatures. This innovative mechanism allowed them to regulate their body temperature efficiently, solving the long-standing puzzle of how dinosaurs kept their brains from overheating despite their large bodies.
A new fossil discovery of an adolescent Tyrannosaurus rex fills a critical gap in the species' growth stages, supporting research on its evolution. The find, named 'Jane', shows features intermediate between juvenile and adult T. rex, resolving decades-long debate.
A team of researchers from Caltech analyzed eggshells from sauropod dinosaurs, bird-like oviraptorid dinosaurs, and Titanosaurs to determine their body temperatures. The results showed that smaller dinosaurs had lower basal metabolisms, while larger ones maintained warm temperatures similar to modern mammals.
A team of scientists has discovered a group of perinatal Saurolophus angustirostris dinosaurs found at the Dragon's Tomb site in Mongolia. The young dinosaurs, likely from the same nest, exhibit characteristics similar to those of adult Saurolophus angustirostris, including an upwardly directed snout and poorly developed crest.
Researchers at Florida State University have created the first complete bird family tree, showing that all land birds diverged from a group of dinosaurs. The study reveals unexpected relationships between different bird species, including the connection between hummingbirds and nightjars.
A 125-million-year-old bird fossil from Spain provides a unique glimpse into the anatomy of early bird flight. The discovery supports the notion that some ancient birds were capable of aerodynamic feats similar to those of modern birds.
A study of 50 Maiasaura tibiae fossils revealed bird-level growth rates and a six-year window of peak physical fitness. The researchers also found that sexual maturity occurred within the third year of life and the average adult mass was 2.3 tonnes in eight years.
New evidence suggests that a massive asteroid collision with Earth triggered increased volcanic activity in the Deccan region of India. High-resolution argon dating revealed a dramatic increase in eruption rate within 50,000 years of the impact.
The Queensland University of Technology has created a virtual dinosaur zoo featuring five iconic Australian species, including Australovenator and Muttaburrasaurus. The interactive learning display allows for realistic movements and behaviors, backed by the latest research and evidence.
Researchers have described a new hadrosaur species, Ugrunaaluk kuukpikensis, which grew up to 30 feet long and lived in darkness for months during the Cretaceous Period. The discovery provides evidence of a distinct, polar fauna in what is now northern Alaska.
A team of scientists from North Carolina State University and the University of Alberta compared Jurassic and Cretaceous ankylosaur specimens to determine how their tails evolved. They found that the tail stiffened before the growth of the osteoderm knob, with handle-like vertebrae appearing in early ankylosaurs.
Two carnivorous dinosaurs, measuring 1.6m and 1.1m at hip height, left 50 fossilized footprints in Germany, revealing slow speeds of 6.3km/h and 9.7km/h for the large and small species, respectively. The analysis provides insight into their daily life, including social behavior and hunting habits.
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 new species, Wendiceratops pinhornensis, discovered in Alberta, Canada, reveals hook-like horns and a prominent nasal horn, shedding light on nose horn evolution in the Triceratops family. The findings add to growing research suggesting high diversity of ceratopsids associated with rapid evolutionary radiation.
A new species of horned dinosaur, Wendiceratops pinhornensis, has been discovered with a unique nose horn and striking frill ornamentation. The find sheds light on the evolution of these distinctive features in the Triceratops family, providing insights into the group's early skull development.
A new dinosaur, Sefapanosaurus, has been discovered in South Africa with distinctive features such as a cross-shaped ankle bone. The fossil, found in the late 1930s, provides insight into transitional early sauropodomorph dinosaurs roaming southern Africa.
A new study found that wild swings in climate and lack of consistently abundant vegetation prevented large plant-eating dinosaurs from dominating tropical regions. Fluctuating environments and extreme seasonal shifts made it unreliable for dinosaur herbivores to establish themselves.
Researchers used CT scans to study the brain anatomy of ichthyosaurs, revealing an enlarged olfactory region suggesting a key role for smell. The findings also show that vision was crucial for these marine predators.
Triassic dinosaurs failed to populate the tropics due to a highly unpredictable hot and dry climate, with extreme wildfires and elevated CO2 levels, making vegetation scarce. This study sheds light on the interplay between climate change and ecosystem evolution at low latitudes, providing new insights into the rise of dinosaurs.
Researchers at the University of Liverpool use digital modeling to reassess the mass of Dreadnoughtus, a massive plant-eating dinosaur. They find that estimates of 60 tonnes and above are unlikely, suggesting it may have weighed between 30-40 tonnes.
Triceratops teeth have five layers of tissue, each with a unique function, allowing them to slice through dense material and vary their diet. The discovery reveals complex dental structures among dinosaurs, inspiring new engineering techniques.
A nearly intact skull of a new horned dinosaur species, Regaliceratops peterhewsi, has been discovered in Alberta, Canada. The specimen features a crown-like frill with large pentagonal plates and a central spike, challenging current classification of horned dinosaurs.
Researchers from the University of Manchester have identified a new sauropod dinosaur fossil from the Middle Jurassic Period in Yorkshire, UK. The 176-million-year-old vertebra is the earliest skeletal record of this type of dinosaur in the United Kingdom and sheds light on the country's 'Jurassic World' reputation.
Researchers successfully reversioned a bird's skull features to mimic small dinosaurs like Velociraptor and Archaeopteryx. This breakthrough sheds light on the molecular underpinnings of an important evolutionary transition, revealing a single genetic mechanism responsible for transforming beak structure.
A Princeton University study found that male and female Stegosaurus had distinct plate shapes, with females having shorter and wider plates and males having taller and narrower ones. This discovery sheds light on sexual dimorphism in non-avian dinosaurs, challenging previous assumptions.
Researchers found that tall and wide-plated Stegosaurus individuals were actually male and female of the same species. The differences in plate height and width were not due to growth, but rather sexual dimorphism, providing new insights into Stegosaurus behavior.
A recent study by Evan Saitta found that Stegosaurus had two types of plates: tall and wide. Contrary to previous claims, these were not separate species or ages, but rather males and females. The plates likely played a role in attracting mates and displaying sex.
Researchers analyzed ancient specimens, revealing open oceanic habitats for newborn mosasaurs. Contrary to classic suggestions, findings suggest eggs were not laid on beaches, and newborns likely did not live in sheltered nearshore nurseries.
A new study by palaeontologists from Portugal and the UK provides conclusive evidence that Brontosaurus is distinct from Apatosaurus, overturning over a century of research. The team applied statistical approaches to calculate differences between species and genera, revealing Brontosaurus as a unique genus.
A team of scientists plans to take core samples from the Chicxulub impact crater, 65.5 million years old and associated with the mass extinction event that wiped out dinosaurs. The expedition will aim to uncover details about the impact and shed light on the mechanisms of large impacts on Earth and other rocky planets.
Scientists have discovered a 100-million-year-old insect fossil that shows an adult female insect caring for its young, a behavior previously unknown to exist during the Mesozoic era. This discovery pushes back the earliest direct evidence of insect brood care by more than 50 million years.
A previously undiscovered species of giant salamander-like amphibian was identified in southern Portugal, growing up to 2m in length and feeding mainly on fish. The discovery reveals that this group of primitive amphibians was more geographically diverse than previously thought.
Some science museums are removing their dinosaur exhibits due to conservation issues. A new database aims to improve estimates of oceanic methane and nitrous oxide emissions. Amateur radio operators' data has potential for validating space weather models and understanding ionospheric behavior.
A new species of long-necked dinosaur, Qijianglong, has been discovered in China with a remarkably lightweight neck and surprisingly stiff joints. The findings suggest that long-necked dinosaurs diversified uniquely in Asia during Jurassic times.
A new species of large reptile, Nundasuchus songeaensis, has been discovered with steak-like teeth and bony plates on its back. This carnivorous predator lived before dinosaurs took over the world, helping to fill gaps in the reptile family tree.
A new study reveals that dinosaurs remained diverse in European ecosystems until the end of the Cretaceous period. Fossils from Spain, France, and other countries show that meat-eating and plant-eating species were present and thriving during the final few hundred thousand years before the asteroid impact.
A recent study reveals that many metatherian mammals, including marsupials like opossums, nearly went extinct alongside the dinosaurs. This allowed advanced placental mammals to rise to dominance and become ubiquitous across the globe today.
This special issue of the Canadian Journal of Earth Sciences presents new research on the systematics, biogeography, and palaeoecology of the Danek Bonebed, a rich source of Edmontosaurus specimens. The bonebed has produced over 800 catalogued specimens, contributing to our understanding of Late Cretaceous dinosaur communities.
A large international group of scientists has published the results of a first-ever look at the genome of dozens of common birds, revealing how modern birds evolved after the mass extinction that wiped out dinosaurs. The research also provides insight into how songbirds learn to sing and brain connection with human speech.
A genetic study of 48 bird species reveals most modern birds diversified after dinosaurs became extinct, with some lineages emerging around 100 million years ago and others in a window of less than 10 million years afterwards.
A team of scientists has decoded the avian genome, revealing that bird evolution occurred rapidly 65 million years ago. The study provides new insights into the evolutionary history of birds, including the discovery of ancient viruses and unexpected kinship between waterbirds and landbirds.
A recent study by the University of Kent found that chickens and turkeys have undergone fewer gross genomic changes compared to their ancient avian ancestor, a feathered dinosaur. The research reveals that birds arrived at their incredible biodiversity through a complex process involving tiny microchromosomes.
Researchers have identified the first definite horned dinosaur species from the Early Cretaceous period in North America, known as Aquilops americanus. This discovery sheds light on the biogeography of neoceratopsian dinosaurs and suggests a late Early Cretaceous intercontinental migratory event between Asia and North America.
A new study has found that the climate of a large swath of the western United States during the Jurassic period was more complex than previously thought. Geochemical analysis of ancient soils revealed an abrupt change from dry to wet environments, contradicting the long-held assumption of a gradual transition.
The Catoca diamond mine in Angola revealed 118 million-year-old dinosaur and crocodile tracks, with the largest mammalian track attributed to a raccoon-sized animal. No fossil bones or teeth of such an animal have been found elsewhere in Africa or the world.
The fossilized skull of Vintana sertichi, a 66- to 70-million-year-old groundhog-like creature, offers significant insights into the lifestyle and relationships of early mammals. The analysis reveals that Vintana likely had large eyes, a good sense of smell, and could eat a diet of roots, seeds, or nut-like fruits.
Paleontologists uncover fatal stab wound in allosaur's pubis bone, suggesting stegosaurs wielded their tails as deadly weapons. The discovery challenges conventional views of stegosaurs as lumbering plant-eaters, highlighting their impressive dexterity and fighting skills.
Researchers use tiny pieces of fossilized tree resin to study ancient environments, plant life, and dinosaur habitats. The findings shed light on the ecosystems in which dinosaurs lived, including the interactions between dinosaurs and insects.
Researchers discovered preserved nasal turbinates in pachycephalosaur fossils, which improved airflow to the olfactory region, enhancing smell and cooling the brain. The study suggests that turbinates played a critical role in directing air to the olfactory region while also cooling the brain.
Researchers from the University of Bristol and the Natural History Museum found that sauropod skulls were sophisticated cropping tools, allowing different species to coexist by partitioning their diets. The study used biomechanical techniques and CT scans to investigate the feeding mechanisms of these giant herbivores.
Researchers have made a breakthrough in understanding how birds evolved from dinosaurs by studying fossil and developmental data, revealing the fusion of two bones to form a semilunate bone. The study clarifies the identity of wrist bones in both groups, shedding light on the evolutionary reversal of a lost bone.
A comprehensive family tree of meat-eating dinosaurs reveals the gradual emergence of bird-like features, such as feathers and wishbones. The study supports a theory that sudden evolutionary changes led to an explosion in avian diversity, resulting in thousands of species today.
A new armoured dinosaur, Ziapelta sanjuanensis, discovered in New Mexico shares similarities with ankylosaurid dinosaurs found in Alberta. The species boasts unique features, such as tall spikes on its cervical half ring and distinctive scales on its snout.
A new hadrosaur species, Rhinorex condrupus, with a unique nasal profile has been discovered in Utah. The species lived approximately 75 million years ago and is believed to have weighed over 8,500 lbs., helping fill gaps about habitat segregation during the Late Cretaceous period.
A new study published in PLOS Biology reveals that the meteorite impact that ended the dinosaurs also accelerated the growth of fast-growing flowering plants, which replaced slower-growing evergreen species. The research used fossilized leaves to reconstruct a plant community thriving during a 2.2 million-year period after the impact.
The Spinosaurus, a massive Cretaceous-era predator, was found to have developed various aquatic adaptations, including small nostrils and giant teeth suited for catching fish. These findings indicate that Spinosaurus was the largest known predatory dinosaur, measuring over 9 feet longer than Tyrannosaurus rex.
Scientists have identified a new species of titanosaurian dinosaur, Rukwatitan bisepultus, in Tanzania, with unique features that set it apart from other finds. The discovery contributes to understanding the evolution of species in sub-Saharan Africa and the global portrait of titanosaurians.
A massive 85-foot-long and 65-ton dinosaur, Dreadnoughtus schrani, has been discovered with the most complete skeleton ever found of its type. The fossil offers an unprecedented window into the anatomy and biomechanics of this giant animal.
Researchers from the University of Pennsylvania have made a groundbreaking discovery in northeastern China, uncovering a possible dinosaur nest with 24 young Psittacosaurus lujiatunensis and one older individual. The fossilized group suggests post-hatchling cooperation among dinosaurs, where a 'babysitter' cared for its younger siblings.
A new study suggests that dinosaurs' demise was partly due to the perfect storm of environmental upheaval, including volcanic activity, changing sea levels, and varying temperatures. This weakened their food chain, making them vulnerable to extinction.