Articles tagged with Paleontology
Scientists at Stanford University have discovered a pattern in how life reemerges after mass extinctions. In the past half-billion years, smaller marine genera were substantially more likely to be wiped out during mass extinction events, but during recovery intervals, originators tended to be tiny compared to holdover species.
Researchers have discovered a new genus and species of tardigrade fossil, Paradoryphoribius chronocaribbeus, preserved in 16-million-year-old Dominican amber. The specimen is the first tardigrade fossil recovered from the Cenozoic era and offers insights into the evolution of this ancient lineage.
A new study analyzing over 3,000 shark teeth reveals the importance of diet in shaping modern shark communities. The research suggests that dietary specialisation among top predatory sharks may increase their risk of extinction.
Researchers describe a new modern-looking tardigrade fossil, Paradoryphoribius chronocaribbeus, found in Miocene Dominican amber. The study reveals unique foregut organization and contributes to the scant tardigrade fossil record, providing insight into the ancient superfamily Isohypsibioidea.
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 63-bone fossil discovery of Archaehierax sylvestris, a 25-million-year-old eagle-like raptor, has been made in South Australia. The species is one of the oldest eagle fossils known from this period and provides insight into raptor evolution in Australia.
An international team of scientists has resolved a half-century-old mystery by discovering that ancient burrow traces in Australian quartzite were made by crustaceans around 40 million years ago. The discovery was made possible by analyzing unusual radioactive minerals in the sand, which revealed that the burrows were more than a billi...
Researchers found that ancient Siberian human populations interacted with outside dog populations at least 2,000 years ago, suggesting dogs were traded as goods. The study reveals that modern dog breeds like Samoyeds and Siberian Huskies maintain significant ancestry from a lineage established prior to 9,500 years ago.
A new species of enantiornithine with a pintail has provided insights into the importance of sexual selection in early avian evolution. The discovery highlights the diversity of tail plumages evolved by this clade and challenges previous hypotheses about aerodynamic costs.
Researchers discovered fossilized footprint tracks of straight-tusked elephants, indicating a Late Pleistocene nursery site in Huelva, Spain. The tracks suggest that young elephants, possibly up to two years old, were raised in this area, which may have provided a food source and reproductive habitat for female elephant herds.
Researchers have discovered a new species of otter in Germany that dates back to 11.4 million years ago. The Vishnu otter genus was previously known only from Asia and Africa, but this finding suggests they also occurred in Europe.
Reproductive complexity in plants arose in two pulses, corresponding to the origin of seeds (~375 million years ago) and flowers (~125 million years ago). These pulses are characterized by significant evolutionary innovations, including the diversification of flowering plants.
A team of researchers has discovered a new species of giant penguin, named Kairuku waewaeroa, in the North Island of New Zealand. The fossil, estimated to be between 27.3 and 34.6 million years old, was found by school children on a fossil hunting field trip in 2006.
Land plants underwent major diversification in two dramatic bursts, driven by the development of seeds and flowering plants. The second burst was more dramatic, giving rise to intricate reproductive structures like those found in passionflowers.
A new study suggests that modern snakes originated from a few species that survived the Cretaceous-Paleogene mass extinction event, which wiped out dinosaurs and other species. Snakes began to diversify into new habitats and exploit new prey, leading to the emergence of diverse lineages such as vipers, cobras, and pythons.
Scientists have identified a new genus of extinct elephant fish, Moskovirhynchus robustus, from Jurassic-era deposits in Moscow. The study reveals unique dental features that set it apart from modern elephant chimaeroids.
A study published in Scientific Reports discovered dental caries in prehistoric primates, indicating a high fruit diet or sugar-rich foods. The prevalence of caries fluctuated over time, suggesting changes in the primates' diet between sugary and non-sugary foods.
Researchers uncover a 500-million-year-old 'worm-like' fossil, expanding the number of worm-like species known from this time period in North America. The discovery provides new clues about prehistoric environments and ecologies, helping scientists better understand the diversity of ancient animals during the Cambrian explosion.
A recent study reconstructed environmental conditions in Europe during early human occupation, revealing a range of climates and vegetation types. The research suggests that early humans preferred sites with mild climates and wooded environments, but later phases saw absences from areas with severe conditions.
Palaeontologists have uncovered a giant new fossil species, Titanokorys gainesi, with an estimated total length of half a meter, belonging to an extinct animal group called radiodonts. The discovery sheds light on the evolution and diversity of these enigmatic animals.
Researchers at the University of Cincinnati have identified a new species of mosasaur, Ectenosaurus everhartorum, which lived 80 million years ago in western Kansas. The discovery marks only the second species in the genus Ectenosaurus and highlights the importance of continued research in the field.
A new study reveals a positive relationship between ocean temperature and increased species richness and functional redundancy in marine ecosystems. Over 40 million years, warmer waters harbored more species with similar functional roles, suggesting that climate change may bolster ecosystem resilience.
A new fossil species, Taytalura alcoberi, has been discovered in Argentina's Late Triassic deposits. The 3D-preserved fossil provides insights into the early evolution of lepidosaurs, with its skull revealing a unique sphenodontian body type and dentition that differ from living or extinct groups.
A well-preserved tapejarid skeleton from Brazil provides the first complete look at the entire body of Tupandactylus navigans, a flying reptile with a mix of terrestrial and aerial adaptations. The fossil's exceptional preservation reveals new details about its anatomy and potential flight capabilities.
Researchers describe two new species of fossil ctenophores from Utah with preserved nervous systems and up to 24 comb rows. These findings suggest that Cambrian ctenophores had more complex nervous systems than living species, with specific nerve tracks along the body and a ring around the mouth.
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.
Researchers have discovered three new species of ancient mammals in North America, hinting at rapid evolution following the mass extinction of dinosaurs. The creatures, which include the 'Hobbit'-named Beornus honeyi, differ from earlier known mammals and suggest that mammals diversified more rapidly than previously thought.
Scientists reconstructed the life history of a woolly mammoth using isotopes from its tusk, revealing it traveled vast distances and covered an extensive range in Alaska. The analysis provides insight into the animal's preferred habitats and behavior, shedding light on one of the most iconic ice-age creatures.
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.
Researchers used isotopic data from a mammoth's tusk to recreate its lifetime journey, covering vast distances across Alaska. The study provides the first evidence that woolly mammoths traveled extensively.
A recent study by Tel Aviv University and the Weizmann Institute found that humans are responsible for the extinction of about 10%-20% of all avian species over the past 20,000-50,000 years. The majority of extinct species were large, flightless, and lived on islands.
A recent study by a FAU team has discovered microplastics in every single mollusc examined from the Svalbard archipelago, including up to 184 particles of eight different types of plastic. The impact on the Arctic ecosystem is still unknown, but laboratory studies suggest that microplastics can cause inflammation in molluscs.
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.
Researchers used CT scanning and 3D printing to study a 370-million-year-old chondrichthyan from Morocco. They discovered that the ancient shark's lower jaw was not fused in the middle, allowing it to rotate outwards when opening its mouth, bringing larger teeth into an upright position.
Researchers from the University of Edinburgh have identified a previously unknown species of teleosauroid and seven close relatives, offering insights into their adaptability and behavior. The study creates an updated family tree of the group, revealing two new large groups with distinct anatomical features.
The discovery confirms that African crocodiles of the genus Crocodylus inhabited Europe during the late Miocene, with fossils found in Italy and Spain. The remains suggest a dispersal from Africa to Europe via sea, supported by modern crocodile behavior and anatomical similarities with other extinct species.
The webinar, titled 'The first carnival of the animals: Causes and consequences of the diversification of Early Palaeozoic marine life', will be presented by leading palaeontologists Professor David Harper and Professor Renbin Zhan. It will examine how major biotic events such as the Cambrian Explosion influenced life on Earth.
A new study has announced the discovery of well-preserved 110-120-million-year-old footprints belonging to a large bipedal ancestor of modern-day crocodiles from South Korea's Jinju Formation. The tracks suggest that these ancient animals were 3-4 meters long and walked on two legs.
A new study by Dr. Thomas D. Carr finds that the size and weight of Tyrannosaurus rex do not determine its age, contrary to long-held assumptions. The research reveals a high-resolution growth series for T-Rex, which shows that even small juveniles had powerful skulls and teeth, making them just as deadly as adults.
Researchers at FAU found that belemnites, ancient squid-like creatures, shrank significantly as water temperatures rose during the Toarcian period. The study suggests climate change played a significant role in shaping the morphology of aquatic organisms and may have contributed to their extinction.
Scientists have discovered a 62-million-year-old bird species in New Zealand, which is one of the oldest named bird species in the world. The discovery of Protodontopteryx ruthae sheds new light on the evolution of seabirds and their adaptation to different environments.
Four new species of extinct Paradoxosisyrinae were discovered in Burmese amber, revealing nectar-feeding habits and inefficient proboscis design. Researchers found the insects could not seal their proboscis for effective nectar uptake, limiting their ability to feed on deep-flowered plants.
A review explores the complexity of evolution's predictability, revealing a mix of contingency and determinism in evolutionary change. The study analyzed various empirical studies to characterize repeatability and contingency in evolution, finding that there is no easy answer to whether history affects the repeatability of evolution.
Fossilized tree trunks from China suggest early forest trees grew by building a hollow cylindrical skeleton that collapsed under its own weight. This controlled collapse allowed the tree to achieve great size and provide insights into the evolution of tree growth.
A new discovery in Dinosaur Provincial Park reveals the existence of two previously unknown species: Latenivenatrix mcmasterae and Stenonychosaurus inequalis. These findings challenge current understanding of the Troodontid family tree in North America.
A team of researchers used a low-cost Kinect scanner to create a high-resolution 3D scan of the T. rex skull, contradicting previous theories about the holes in its jawbone. The scan reveals that the angles at which the holes bore through the jaw are inconsistent with bite patterns, casting doubt on two popular hypotheses.
A newly discovered ancient reptile from Switzerland shows its unique scale armor for the first time. The Eusaurosphargis dalsassoi has a life on land skeleton despite being found with fish and marine reptiles.
A new primate species from India has been discovered, revealing a previously unknown branch of the evolutionary tree. The ancient Ramadapis sahnii existed around 11-14 million years ago and is connected to lemurs and humans through its Sivaladapidae family ties.
A recent discovery of a small-bodied ape in Spain shares features of both catarrhines and great apes, suggesting that the last common ancestor of all apes may have been less great ape-like than previously assumed. This finding has significant implications for our understanding of hominoid evolution.
Two new species of Saurichthys, a predatory ray-finned fish, have been discovered in Monte San Giorgio, Switzerland. These ancient fishes exhibit distinct skull and body shapes, suggesting different hunting styles and habitats, contributing to their evolutionary success.
Researchers analyze fossil assemblages from Ohio buhrstone to determine its provenance, revealing characteristics that distinguish it from French buhrstone. The study sheds light on the use of non-destructive techniques in studying ancient artifacts, with potential applications for understanding the origins of other tools.
Scientists successfully reassemble two halves of a giant sea turtle bone, one dating back to the Cretaceous Period and the other from the 19th century. The discovery reveals that some exposed fossils can survive longer than previously thought, with calculated estimates suggesting the turtle's size was around 10 feet long.
Researchers developed a method to harden bones by growing aragonite on their surfaces, making them 50-70% sturdier. This technique has wide implications for preserving valuable remains and restoring cultural clues.
Researchers have discovered two new fossil crocodile species in the Urumaco region, revealing that up to 14 different species coexisted around 5 million years ago. The discovery sheds light on the diverse array of crocodilian species that once inhabited South America and Southeast Asia.
A University of Alberta paleontologist has discovered that Tyrannosaurus rex had the greatest variation in tooth morphology or structure among all tyrannosaurids. The varying edges enabled strong teeth to cut through flesh and bone, while the placement and angle directed food into its mouth.
A Michigan State University professor is exploring the origin of life at its fundamental building blocks, finding connections between bacteria and humans through molecular complementarity. This shared set of modules may hold the key to understanding evolution and explaining diseases like diabetes.
A new study from Montana State University has uncovered enormous bones of the sauropod dinosaur Alamosaurus sanjuanensis, which is now recognized as North America's biggest dinosaur. The giant vertebrae and femur measured up to 100ft long and weighed over 70 tons.
A team of researchers, including University of Michigan paleontologists, has discovered a new species of herbivorous sauropod dinosaur, Abydosaurus mcintoshi. The fossilized remains, found near the Carnegie Quarry in Dinosaur National Monument, provide valuable insights into the evolution of these massive creatures and their diets.
Raptorex displays all the hallmarks of Tyrannosaurus rex, including a large head and tiny arms, at about 100th the size that would eventually become T. rex. This suggests that tyrannosaur design evolved at a small body size, with larger animals developing later.
Scientists re-examined data to discover a flawed statistical model used for calculating dinosaur mass, leading to revised estimates of Apatosaurus louisae at 18 tonnes instead of 38 tonnes. This finding has significant implications for various theories about dinosaur biology.