Articles tagged with Dinosaur Fossils
Scientists have reevaluated the emergence of early dinosaur relatives and their connection to the first dinosaurs. The new findings suggest a shorter time gap between the two, dating back around 234-236 million years, contradicting previous estimates.
A rare fossil from eastern North America of a dog-sized horned dinosaur has been identified by a scientist at the University of Bath. The discovery highlights an east-west divide in North American dinosaur evolution, suggesting that dinosaurs in Appalachia evolved differently from those in western North America.
Researchers have reclassified a Canadian 'dinosaur' fossil as Dimetrodon borealis, featuring distinctive blade-like teeth. The discovery sheds new light on the animal's relationship to mammals and dinosaurs, and provides insight into its evolutionary history.
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.
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.
Researchers use combined techniques to determine color of ancient bat species, finding they were both reddish-brown. The study uses fossilized melanin to infer color, showing a correlation between melanin shape and color.
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 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.
Scientists have discovered that dinosaurs remained rare near the equator during the late Triassic period due to extreme climate fluctuations and wildfires that fueled hotter fires. The study revealed a pattern of rapid vegetation changes related to climate shifts, which led to droughts and plant die-offs.
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.
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.
The discovery of a 16.7-inch-long, 8.7-inch-wide theropod dinosaur femur from the Late Cretaceous period is the first dinosaur fossil found in Washington State. The fossil is approximately 80 million years old and provides insight into the West Coast's dinosaur record.
The discovery of a partial left femur from a theropod dinosaur in Washington state provides valuable insights into the region's Late Cretaceous period. The fossil is approximately 80 million years old and is believed to have belonged to a smaller than T. rex species, with characteristics unique to theropods during that time.
A new species of dinosaur, Chilesaurus diegosuarezi, has been discovered in Chile with a mix of characteristics from different groups of dinosaurs. The plant-eating theropod has a small skull and feet similar to long-necked dinosaurs, challenging previous understanding of evolutionary divergence.
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 new species of Ichthyosaurus has been identified in a British marine reptile fossil, shedding light on the diversity of ichthyosaurs during the early Jurassic period. The discovery was made possible by advances in analysis and comparison with other groups of reptiles.
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 study reveals that the oldest primate ancestors lived in trees, accessing food sources unavailable to ground-dwelling species. The discovery provides evidence of arboreal life evolving early in the history of primates, with Purgatorius, a tiny tree shrew-like creature, being estimated to have weighed about 3.5 ounces.
A new fossil discovery links dolphin-like ichthyosaurs to their terrestrial ancestors, revealing a previously unknown stage in their evolution. The 248-million-year-old fossil has flexible flippers and a shorter snout than its marine counterparts, suggesting it could have moved on land with ease.
Researchers employed high-resolution X-ray CT scanning and digital visualization techniques to restore a complete skull of the 3-4m herbivorous dinosaur Erlikosaurus andrewsi. The team digitally dissected the skull, filling in breaks and cracks, duplicating missing elements, and reversing deformation, resulting in a life-like restoration.
Fossilized lamprey larvae, 125 million years old, have been discovered in Inner Mongolia, providing insights into the life cycle and evolution of this ancient fish. The study sheds light on the development of all animals with a backbone, revealing that human body features originate from jawless fishes like the lamprey.
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.
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.
The largest land animal for which mass can be accurately calculated, Dreadnoughtus measures 85 feet in length and is estimated to weigh around 65 tons. Its nearly complete skeleton provides unprecedented insights into the anatomy and biomechanics of massive animals that once roamed Earth.
Researchers have found exceptionally well-preserved fossil insects in the French equivalent of the Tithonian Konservat-Lagerstätte, comprising a new species representing the oldest known water treader. The fossils provide crucial insights into the evolution of terrestrial environments during the Upper Jurassic period.
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 recent study reclassifies Scansoriopteryx as a non-dinosaurian bird, with characteristics like elongated forelimbs and wing feathers. The findings validate predictions from the early 1900s that small, tree-dwelling archosaurs are the ancestors of birds.
Researchers have discovered a single-ovary reproductive system in the basal bird Jeholornis and derived enantiornithine birds from China, indicating that this adaptation occurred gradually during the evolution of dinosaurs and basal birds. This finding supports the hypothesis that birds lost one ovary due to energetic pressures of flight.
Nizar Ibrahim, a University of Chicago paleontologist, has been selected to National Geographic's Emerging Explorers program. He receives a $10,000 award to aid further research and exploration in the deserts of North Africa, where he discovers fossil footprints and a new species of flying reptile.
Researchers used synchrotron-imaging to examine 150-million-year-old predatory dinosaur bones, discovering that many healed injuries were not fatal to humans. The study sheds light on the chemical signatures of bone healing and remodelling strategies in extinct vertebrates.
The newly discovered Anzu wyliei was an omnivore that roamed the Dakotas with T. rex 66 million years ago and stood over 10 feet tall. The dinosaur's fossil discovery sheds light on a previously limited category of oviraptorosaur theropod dinosaurs.
A new species of large-bodied, feathered oviraptorosaurian theropod dinosaur has been discovered in western North America. The dinosaur, Anzu wyliei, had a crested skull, long neck, and large claws, with an approximate body length of 3.5 m and a body mass of about 200-300 kg.
Scientists discover unusual bird-like dinosaur with feathers on arms and tail, and a toothless beak. The new species, Anzu wyliei, lived 68-66 million years ago and provides the first detailed picture of North American oviraptorosaurs.
The discovery of Anzu wyliei provides the first comprehensive look at the Caenagnathidae group, a mysterious theropod dinosaur family. The nearly complete skeleton reveals a bird-like creature with characteristics such as a toothless beak and feathered forelimbs.
A new tyrannosaurine species, Nanuqsaurus hoglundi, has been identified from a 70-million-year-old Alaskan fossil. The smaller dinosaur is estimated to be around 25 inches in skull length compared to T. rex's 60 inches, suggesting an adaptation to arctic seasons.
A new sauropod species, Yongjinglong datangi, has been discovered in northwestern China, providing insights into the diversity of Titanosaurs. The fossil remains suggest that the animal was a juvenile or subadult, with features indicating potential for growth and increased size in adults.
International team uncovers first record of dinosaurs from Saudi Arabia, featuring a sauropod and carnivorous theropod species. The discovery sheds light on the region's rare dinosaur fossil record.
Using CT scans, researchers created a non-destructive method to separate fossilized bones from surrounding sediment. They then printed the bones using a 3-D printer, producing an accurate replica that could be shared with other research facilities.
A high school student's discovery of a baby Parasaurolophus skeleton has revealed new insights into the growth and development of this unique herbivorous dinosaur. The nearly complete fossil measures six feet long and is estimated to be only a year old when it died, growing to an adult measuring nearly 25 feet in length.
Researchers analyze dinosaur skulls using 3D geometric morphometrics and conclude that three previously identified species are actually one. The study reveals that differences among specimens arose from the burial and compression process, highlighting the importance of considering these factors in taxonomic classifications.
The discovery of Megaconus mammaliaformis sheds light on the evolution of modern mammals, revealing a 165-million-year-old proto-mammal with hair and fur. The fossil, found in Inner Mongolia, China, provides evidence that key biological functions related to skin and integument evolved before the rise of modern mammals.
A University of Alberta researcher has discovered that there were four distinct species of ankylosaurs instead of one, shedding new light on the lives of these ancient creatures. The study, published in PLOS ONE, reveals that three of the species coexisted in what is now Dinosaur Provincial Park in southern Alberta.
The newly discovered Dahalokely tokana is an abelisauroid dinosaur that lived around 90 million years ago. Its fossils found in Madagascar preserve a mix of features from dinosaurs on both the island and the Indian subcontinent, sparking questions about its relationships to these ancient animals.
A recent genetic study of tadpole shrimps reveals that these organisms are much younger than previously thought, with some species evolving in the past 25 million years. The research challenges the term 'living fossil' by showing that these ancient crustaceans have undergone periods of radiation and extinction.
A study in the Coll de Nargó archaeological site in Lleida has documented detailed records of four new dinosaur egg species, expanding our understanding of sauropod nesting habits. The discovery also sheds light on the geological formation of the region and its connection to French dinosaurs.
Researchers found fossil evidence that small crocodiles fed on baby ornithopod dinosaurs, revealing a new dimension to the food chain. The discovery also uncovered a previously unrecognized small ornithopod dinosaur species.
University of Alberta researchers identified 23 species of small meat-eating dinosaurs with fossilized teeth, revealing multiple short-lived species instead of a few long-lived ones. The findings suggest that these tiny predators roamed the region for distinct geographic areas and time periods.
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.
Researchers have uncovered historic letters written by Edward Drinker Cope to geologist Robert T. Hill, shedding new light on the Texas connection to the Bone Wars. A newly translated German ode to a fossil also provides insight into the era's intense fossil collecting frenzy.
Researchers found a young megalosaur with filamentous integument, revealing its body was covered in feathers, which may have been present in all predatory dinosaurs. The discovery also sheds light on the changing diets and lifestyles of juvenile dinosaurs as they grew older.
A newly discovered dinosaur, Sciurumimus albersdoerferi, has provided evidence that all predatory dinosaurs had feathers, challenging the previous assumption that feathered dinosaurs were only related to birds. The fossil, which represents a juvenile specimen, shows a remarkable difference in diet between young and adult megalosaurs.
Researchers at the University of Manchester have developed a new method to accurately measure dinosaur weight, reducing estimates for a Brachiosaur skeleton from 80 tonnes to 23 tonnes. The team's laser scanning technique provides a more accurate estimate of body mass, suggesting dinosaurs were not as massive as previously believed.
Fossil discovery reveals ancient flea-like animals that could feed on dinosaur skin, leading to a painful bite experience. The creatures, similar to modern fleas but much larger, had flat bodies and long claws.
The study, published in Geological Magazine, reveals that Aragosaurus ischiaticus, found in Teruel, Spain, is the oldest of its kind and could be a common ancestor. Its new age means it fills the gap in the transitional period between Jurassic and Cretaceous periods.
Researchers have discovered a new species of turtle, Polysternon isonae, that lived with dinosaurs in Isona, Spain. The fossil remains found are rare and provide valuable information about the morphology and size of the animal.
A new species of horned dinosaur named Spinops sternbergorum was discovered nearly 100 years after its initial discovery in southern Alberta, Canada. The animal lived approximately 76 million years ago and weighed around two tons, featuring a unique bony neck frill with long spikes.