Articles tagged with Paleontology
Researchers found 87 genes affected by deletions or short insertions in the woolly mammoth genome, potentially impacting its adaptability to cold environments. These changes may have contributed to unique traits such as fur growth and hair shape.
A new panda species, Agriarctos nikolovi, has been discovered in Bulgaria, which may have been Europe's last known giant panda. The fossilized teeth, found in the late 1970s, suggest that this ancient panda consumed a largely vegetarian diet, unlike modern pandas.
The New Mexico site provides conclusive evidence for early human settlement in North America, dating back to 36,250-38,900 years ago. The site's fossil record includes blunt-force fractures, bone flake knives, and signs of controlled fire, which were not typical of earlier archaeological sites.
Scientists found parasite eggs in coprolites of giant short-faced hyena Pachycrocuta, dating back 1.5-1.8 million years. This discovery suggests that toxocariasis was a widespread disease among extinct hyenas.
A new study found that North American mammal communities have become more than twice as homogenous as they were 10,000 years ago, primarily due to early human hunting and farming activities. The accelerated homogenization is likely linked to the spate of large-mammal extinctions, which increased similarity among remaining species.
A new study found evidence that multituberculates, an extinct group of mammals, likely reproduced in a placental-like manner. This discovery questions the long-held idea that marsupials were less advanced than placentals in terms of reproductive strategy.
Ancient DNA research has made significant strides in the past decade, enabling scientists to reconstruct genomes of extinct species like Neanderthals and Denisovans. The latest advancements have improved efficiency and accuracy, allowing for the recovery of usable data from degraded samples. These findings shed light on human migration...
A new study describes Qikiqtania wakei, a close relative of Tiktaalik roseae with features more suited for swimming and life in the water. The fossil includes partial jaws, neck, and scales, as well as a complete pectoral fin with a smooth and curved upper arm.
Scientists used inner ear biomechanics to infer body temperatures in ancient mammals. Mammal ancestors didn't develop ideal inner ear structures for warm-bloodedness until 233 million years ago.
The Liexi Fauna discovery provides new evidence for the Great Ordovician Biodiversification Event, featuring a rich array of biomineralized fossils and non-mineralized tissues. The fauna reveals a flourishing Early Ordovician marine ecosystem with diverse organisms and varied lifestyles.
A new study suggests that voluntary imagination, rather than speech, is crucial for combinatorial language acquisition in children with language deficiencies. The research found that children who engaged in a voluntary imagination intervention showed significant improvement in language comprehension.
A new study reveals that Triassic dinosaur species endured freezing conditions due to their well-developed feathers. This adaptation allowed them to thrive in colder climates, while other reptiles perished. The discovery sheds light on the ecological rise of dinosaurs after the Triassic-Jurassic Extinction.
Fossilized brains of a 500-million-year-old marine predator, Stanleycaris, have revealed new insights into the evolution of arthropod brain structure. The two-segmented head and brain of Stanleycaris suggest that this trait may be more ancient than previously thought.
A new giant dinosaur species has been discovered in Patagonia, providing insight into the evolution and biology of dinosaurs like Tyrannosaurus rex. The research reveals that large carnivorous dinosaurs grew their skulls larger while their arms shortened over time.
Fossil frogs died during mating due to drowning as they were submerged by one or more males. The study suggests that the mating behaviours of modern frogs are ancient and have been in place for at least 45 million years.
Researchers found a sharp spike in wildfire activity during the end-Permian mass extinction, which led to the collapse of entire ecosystems. The study highlights the potential for wildfires as a direct driver of extinction, rather than just a symptom of climate change.
A fossilized wrist bone from a 6-7 million-year-old giant panda ancestor reveals the earliest evidence of a bamboo diet and the evolution of its unique 'thumb' structure. The discovery sheds light on how this adaptation allowed ancient pandas to thrive on a low-nutrient bamboo diet.
A new species of large carnivore, Tartarocyon, has been discovered in the Pyrenees with a fossilized lower jaw weighing around 200 kg. The discovery provides insights into the development of European 'bear dogs' during the late Miocene period.
Researchers discovered a new spinosaurid dinosaur, 'White Rock spinosaurid', on the Isle of Wight, known for its impressive length and limited fossil material. The discovery supports previous findings that spinosaurids originated in western Europe.
A new species of large-bodied meat-eating dinosaur, an abelisaurid theropod, has been found in the Bahariya Oasis of Egypt's Western Desert. The discovery provides the first known record of this group from a middle Cretaceous-aged rock unit, and sheds light on the biodiversity of Cretaceous dinosaurs in Egypt and northeastern Africa.
A new discovery in China's Guangxi Zhuang Autonomous Region has found the oldest known mayfly swarm, dating back to the Early Jurassic period. The finding reveals complex mating-swarm behavior in stem-group mayflies, highlighting the underappreciated ecological significance of insects in ancient ecosystems.
Researchers suggest that giraffes' unique head and neck morphologies were adapted for fierce head-butting behavior in competition for mates. The discovery of ancient fossils reveals a complex evolution driven by both food competition and sexual selection.
A new study by an international collaboration of researchers highlights the legacy of colonialism in scientific practice across the Caribbean archipelago. The authors outline systemic issues related to perceptions and scientific practice, but also describe positive steps being taken in countries like Trinidad and Tobago and The Bahamas.
Scientists have described a new species of therizinosaurid from Japan, shedding light on the function and evolution of their fearsome claws. The discovery indicates that therizinosaurs existed in Asia over a longer timescale than previously known and were adapted to coastal environments.
A team of researchers has identified the ancient bird species behind giant prehistoric eggs in Australia, resolving a years-long debate. The study found that the eggs belonged to a unique duck-like line of megafauna known as the 'Demon Ducks of Doom', which was laid by the Genyornis newtoni bird.
A new study has found that most dinosaurs were warm-blooded, contrary to long-standing debate. By analyzing molecular waste in fossilized bones, researchers inferred dinosaur metabolic rates and found they were generally high.
Paleontologists have found the jaws of an Etruscan bear in a Crimean cave, dating back to 2-1.5 million years ago. The discovery suggests that early humans may have lived on the Crimean Peninsula around the same time.
Researchers discovered 'ghost' nannofossils in black shale deposits worldwide, revealing plankton were more resilient to past warming events than thought. These findings contradict previous interpretations of declines in nannoplankton fossils during global warming events.
Researchers from Nagoya University found that Quetzalcoatlus was not suited for soaring flight due to its large wing loading. The study suggests that the Quetzalcoatlus's thermal soaring abilities were below those of modern birds, contrary to previous assumptions.
The study reveals that early animal communities exhibited complex ecological structures more than 550 million years ago, setting the stage for the Cambrian explosion. The analysis of metacommunity structure suggests competitive exclusion as the cause of the diversity drop in the late Ediacaran period.
Researchers have re-examined ancient fossil material from Brazil, revealing two distinct species: Maehary bonapartei and Faxinalipterus minimus. The discovery contradicts previous assumptions that Faxinalipterus was a flying reptile, instead confirming it as a primitive reptile.
Paleontologists discovered sets of fossils representing three new ichthyosaurs, including the largest ichthyosaur tooth ever found. The discovery includes a 15-meter-long ichthyosaur and the largest trunk vertebra in Europe, rivaling the 21-meter long Shastasaurus sikkanniensis.
Neanderthals occupied a lightly wooded lakeshore about 90,000 years ago in a relatively temperate climate. Stone tools found at the former campsite attest to activities such as woodworking and plant processing.
A study has discovered that humans are disrupting a fundamental pattern in ecosystems, which dates back at least 66 million years. The U-shaped relationship between diet and size in modern land mammals has been found to span across multiple vertebrate groups, including birds, reptiles, and fish.
A new study has found that pterosaurs could change the color of their feathers using melanin pigments. The research is based on a 115-million-year-old fossilized headcrest of the Tupandactylus imperator pterosaur from north-eastern Brazil.
The Linyi Lagerstätte, a new middle Cambrian fossil site in North China, has provided valuable insights into the evolution of animals during this period. The discovery has shed light on the morphological disparity and community structure of marine fauna following the Cambrian explosion.
A new large early ichthyosauromorph, Baisesaurus robustus, has been discovered in the Lower Triassic rocks of Zhebao, Guangxi Province, extending its geographic distribution. The fossil is estimated to be around 3m long and shares similarities with Utatsusaurus from Japan.
Scientists have discovered two complete ichthyosaur specimens from the Solnhofen area, preserving outer body shape and skin. The fossils, dated to around 150 million years old, provide new insights into the anatomy of these marine reptiles.
During the Paleocene, placental mammals first expanded their body sizes to occupy new ecological niches left behind by dinosaurs. Later, during the Eocene, brain size increased as enhanced cognition became more important in saturated ecosystems.
For the first 10 million years after dinosaurs died out, mammals bulked up to boost their survival chances. Their brain sizes decreased as a result, with relative brain sizes of early mammals decreasing due to increased body size.
Paleontologist Kevin Padian suggests that T. rex's short arms evolved to prevent accidental or intentional amputation during pack feeding, a behavior thought to be common among the species. This hypothesis proposes that the reduced forelimbs provided an adaptive advantage by reducing the risk of injury during intense feeding interactions.
Researchers analyzed fossil collections from the Wonderwerk cave, discovering that barn owls remained a dominant predator throughout the Lower Palaeolithic era. The consistent presence of barn owl remains suggests reliable paleo-environmental results over nearly 2 million years.
A fossilized owl skeleton has been discovered in China's Tibetan Plateau, showcasing an extinct species that was active during the day. The study reveals that this ancient owl, Miosurnia diurna, was part of a group of owls that evolved to be diurnal.
A new study reveals that the giant camel Camelus knoblochi lived in Mongolia with anatomically modern humans until climate change led to its extinction. The species likely competed with its critically endangered relative, the Bactrian camel, for resources.
Researchers found exceptionally preserved fossils from different locations, suggesting that rising global temperatures during the Early Jurassic period may have created favorable conditions for fossilization. The study suggests that past climate change could have enabled exceptional preservation in various environments.
A recent study reveals that Megalodon's body size was influenced by water temperature, with individuals growing larger in cooler waters. The research suggests that Bergmann's rule may have played a role in the shark's gigantism.
Researchers from China, Germany, France and Spain uncovered the lifestyle of humans living in East Asia 40,000 years ago. The study found evidence of ochre processing, miniature stone tools and bone tools, demonstrating technological innovations and cultural diversification.
Researchers analyzed mollusk shells at 4,000-year-old shell ring villages in Georgia and found environmental changes drove the formation and abandonment of these coastal communities. Smaller oyster shells and lower salinity conditions suggested depletion in oyster stocks and unsustainable fishing practices.
Researchers discovered calcification and silicification of insects in Kachin amber, preserving complete compound eyes, cuticle structures, and skin sensillae. The study sheds light on the role of mineralization in preserving fossils and challenges existing views on amber taphonomy.
Researchers found physical differences in femur, dental structures across specimens suggesting re-categorization into three groups or species. Two new species, T. imperator and T. regina, are proposed based on analysis of 37 Tyrannosaurus specimens.
Researchers analyzed fossilized fish bones from the Tanis locality to reconstruct the latest Cretaceous seasonality. The study reveals that the catastrophic extinction occurred during northern-hemisphere spring and affected sensitive life stages of organisms, including dinosaurs.
The discovery of Balkanatolia reveals a unique fauna that enabled Asian mammals to colonize Western Europe 34 million years ago. A new fossil deposit in Turkey dated 38-35 million years ago supports this finding, shedding light on the evolution of mammals.
Researchers identified two new species of ancient bird fossils found in northwestern China. One species, Brevidentavis zhangi, had small peg-like teeth and a movable bony appendage at the tip of its lower jaw that may have helped it root for food.
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 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.
A new study reveals that early echinoderm body shape evolution outpaced ecological innovation, contradicting long-standing expectations. The researchers found that morphological diversification occurred at a rate of 71% faster than ecological evolution during the Cambrian and Ordovician periods.
Researchers from Harvard University have confirmed a previously unknown species as the second opabiniid to be discovered, Utaurora comosa. The ancient arthropod shares characteristics with both radiodonts and Opabinia, highlighting the complexity of Cambrian evolution.
A new study by DePaul University researchers has found that all previously proposed body forms of the Megalodon shark are based on speculations. The lack of scientific evidence means that the public image of a massive, monstrous shark remains unchanged, while paleontologists continue to search for clues in the fossil record.
A new study using a two-dimensional drawing technique has found no general patterns in the fin and body shapes of five warm-blooded Lamniformes species to determine Megalodon's shape. The research challenges previous conclusions about the extinct shark's body form, suggesting that warm bloodedness does not make sharks differently shaped.
Researchers found that low volcanic temperatures caused high sulfur dioxide emissions, leading to short-term cooling and contributing to the fourth mass extinction. The study suggests that this cooling enabled small-bodied dinosaurs to grow and prosper, ultimately thriving during the Jurassic period.