Articles tagged with Skull
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Researchers used digital endocranial cast models to compare canine brain shapes, finding that the shortening of the facial skeleton affects brain regions, primarily the olfactory bulb and frontal lobe. This could have profound implications for dog behavior and cognition.
Researchers have found two human skulls and a goat skeleton with unique features in Cueva de la Dehesilla, Spain. The site reveals new insights into the funerary rituals of Neolithic Iberian populations, challenging previous understanding of burials in the region.
A 410-million-year-old fossil discovery challenges conventional wisdom on shark evolution, hinting that bone may have emerged before cartilage. The find provides new insights into the evolutionary history of sharks and their relatives.
A new study by Flinders University and The University of Queensland reveals that rodents' skull shapes are similar across habitats, contradicting expectations. This conservation of shape may be due to the specialization of rodent jaws, allowing for a versatile arrangement that discourages evolutionary change.
The Natodomeri fossil site in northwest Kenya is yielding a complete skull and partial skeleton of an early modern human, as well as extensive archeological material. The site's discovery provides a unique opportunity to compare early humans from the same time period but existing in different places.
Scientists have made a groundbreaking discovery of a perfectly preserved dinosaur embryo, revealing that sauropods had stereoscopic vision and a horn on the front of their face. The discovery has challenged previous theories about the appearance of these giant herbivores, which lived 80 million years ago.
The discovery of the first near-intact embryonic skull of a sauropod sauropodomorph has revealed unexpected facial features. The study suggests that hatchlings may have had specialized features, such as a thickened prominence or single-horned face, that changed as they grew into adults.
Researchers have discovered three new species of African vesper bats by comparing their genes, teeth, skulls, echolocation calls, and penis bones. The discovery has resolved taxonomic relationships between the large number of species in the family and describes two new genera.
Researchers found similarities in northern quoll skulls across a 5000km range, raising hopes for conservation. The study suggests cross-breeding isolated populations may be feasible without losing adaptations.
A recent study challenges the notion that birds evolved rapidly following the mass extinction of non-avian dinosaurs. Instead, researchers found that bird skull evolution actually slowed down compared to non-avian dinosaurs. This slower pace of evolution is attributed to adaptations in beak shape and size.
The study found that the fetal skull and maternal pelvis show covariation to facilitate smooth delivery, contradicting previous hypotheses about bipedalism's role in this process. Researchers used CT scans to analyze the anatomy of rhesus macaques and found evidence of this adaptative relationship.
A new study has revealed that the long-necked reptile Tanystropheus was a surprisingly adaptable creature, living in water and hunting underwater. The researchers reconstructed its skull in unprecedented detail, showing adaptations for life in water, including long teeth for catching prey.
Researchers studied angel shark body shapes using modern methods and found that early species had distinct external features, while modern species show reduced variation in shape. The integration of skull parts may limit adaptability, increasing extinction risk.
Dingoes in poison-baited regions have increased in size by 6-9% over the last 80 years, according to a collaborative study. The growth is linked to reduced competition for food, as baiting campaigns favor the survival of larger dingoes.
Researchers discovered a shared skeletal structure between African and American crocodiles, suggesting a close evolutionary relationship. This finding proposes that crocodiles migrated from Africa to America, reaching the Americas via Australasia around 7 million years ago.
A nearly complete skeleton of an extinct large dolphin found in South Carolina reveals that this species was a top predator in its community. The findings suggest that modern baleen and toothed whales evolved similar features independently, driven by parallel evolution in the same aquatic habitats.
Thylacosmilus atrox, a marsupial from Argentina, was previously thought to be a fierce predator like Smilodon. However, new research reveals it was likely a scavenger, using its canines to open carcasses and possibly its tongue to extract innards. Its skull and teeth show distinct differences from those of placental saber-toothed cats.
A study found that Night Parrots' visual system is not well-adapted to life in the dark, contrary to expectations. Their eye size and optic nerves are similar to other parrots, with poor resolution vision, making it difficult to distinguish obstacles.
A team of researchers found that dinosaur skulls from northern Alaska belong to the genus Edmontosaurus, not a newly proposed genus. The discovery suggests these plant-eating dinosaurs existed over a broad range, extending from northern Colorado to the Arctic.
Researchers discovered evidence of ear infections in 15,000-year-old human remains from the Levant, peaking around 6,000 years ago due to environmental factors. The study suggests that changes in living conditions, such as increased population density and poor hygiene, contributed to the prevalence of ear infections.
Researchers report a Triassic-era fossil that may be an ancestor of modern salamanders, extending the fossil record by 60-74 million years. The discovery provides insight into the evolution of salamander-like body plans and suggests Eurasia as the point of origin for salamanders.
The discovery of Adalatherium, a bizarre mammal from Madagascar, sheds light on the evolution of mammals during the time of dinosaurs. Its unique characteristics and preserved 3D structure offer valuable insights into the geography and fauna of the region.
Researchers found that nicotine exposure during lactation can alter development of the head and face in mice, leading to premature closure of joints that connect sections of the skull. This could result in craniosynostosis, a disorder that requires neurosurgery to correct.
A new animal study suggests that maternal nicotine exposure during breastfeeding can affect offspring's skull and face development. The research team found that exposure to nicotine during lactation was associated with abnormalities in craniofacial development.
A new study published in Science has found that Homo erectus ancestors are older than previously thought, with fossils dating back to 2.04-1.95 million years ago in South Africa. This challenges the long-held theory of Africa's origin as the homeland of modern humans.
Researchers at Shinshu University School of Medicine have developed a non-invasive method to predict intracranial pressure (ICP) by measuring the brain's natural resonance frequency (NRF). The NRF is strongly correlated with ICP, allowing for accurate predictions without inserting a catheter or sensor inside the skull.
New research reveals that ancient hominins had a mosaic of ape and human features. The study resolves a question about whether these species had prolonged childhood, which allowed for cognitive and social skill acquisition.
A study of 158 frog species reveals that radically shaped skulls have evolved more than 25 times in frogs. These armored frog skulls often feature intricate patterns of grooves, ridges, and pits formed by extra layers of bone, which tend to appear together with specific feeding habits or defenses.
The discovery of a nearly complete 66.7-million-year-old bird skull, nicknamed the Wonderchicken, provides direct insight into the early evolution of modern birds. The fossil, found in Europe, combines features common to chicken- and duck-like birds, suggesting it is close to the last common ancestor of modern chickens and ducks.
The discovery of Oculudentavis khaungraae, a tiny bird-like skull found in Burmese amber, reveals new insights into bird evolution. The specimen's unique anatomical features suggest a never-before-seen combination of features, including a diurnal lifestyle and surprising similarities to modern lizards.
Four late Pleistocene-early Holocene skulls from Tulum, Mexico, show high morphological diversity among early North Americans. The study found associations between ancient remains and modern populations from diverse regions, including Asia, Europe, and South America.
The analysis of four ancient skulls from Mexico suggests that early North Americans were more biologically diverse than previously believed, with affinities to various populations including Arctic, European, Asian, and Native American groups. This new finding challenges the previous narrative about the settlement of the Americas.
Researchers have identified distinct species of giant straight-tusked elephants in Europe and Asia, with the Indian form featuring a robust skull crest. The study, published in Quaternary Science Reviews, reveals that these prehistoric giants went through six sets of teeth in their lifetimes.
Researchers analyzed skulls to uncover relationships between people groups, upending longstanding hypotheses about the Caribbean's colonization. The study reveals the presence of Caribs in Jamaica, Hispaniola, and the Bahamas, supporting Columbus' accounts of fierce raiders.
The newly discovered Asfaltoventor vialidadi from Patagonia exhibits a unique blend of skeletal traits, challenging current understanding of tetanuran relationships. This finding supports the concept of evolutionary experimentation during periods of rapid diversification and mass extinctions.
Researchers found that herbivorous dinosaurs developed similar skull features and bite styles, such as elongated skulls and grinding teeth, in response to eating plants. These convergent evolutionary strategies suggest a trade-off between biting speed and efficiency for these slow-moving animals.
Researchers have found a well-preserved Styracosaurus skull with asymmetrical horns, challenging traditional identification methods. The discovery reveals morphological variability in dinosaur skulls, leading to reevaluation of previously assumed species.
Scientists discover ancient legged snake Najash, which shed light on the evolution of snakes' flexible skull. The study reveals that snakes possessed hind legs for 70 million years before losing them.
A new study reveals that ancient legged snakes had a cheekbone nearly 100 million years ago, contradicting previous assumptions about their body shape and evolutionary history. The research provides critical insight into the evolution of modern snake skulls using advanced micro-computed tomography scanning.
A recent study reveals that wombat jaws appear to change in relation to their diets, allowing them to adapt to tougher plants due to climate change. The research suggests that individual shapes of wombat skulls are related to an individual's diet and feeding preferences, enabling short-term adaptations.
Researchers from Boston University School of Medicine found that Dominican and Haitian individuals can be differentiated with statistical certainty despite their close physical proximity. The study highlights the importance of conducting research on understudied groups to aid forensic specialists in identifying missing persons.
Researchers found that younger elementary school-age children are at significantly greater odds than those older than high school to suffer a skull or facial fracture while participating in snow sports. Middle school, high school, and post-high school age groups were more likely to experience intra-abdominal injuries.
A recent study published in The Journal of Craniofacial Surgery found that human skull dimensions follow the Golden Ratio. However, less related species such as dogs and monkeys diverged from this ratio, suggesting unique evolutionary patterns.
Researchers have discovered a new species of ten-foot-long crocodile in New Guinea, separated from another by the island's mountain range. The species, Crocodylus halli, was named after Philip Hall, who first investigated the reptile's lineage.
A new study by a University of Arkansas anthropologist suggests that feeding habits of an extinct kangaroo species were similar to the modern-day giant panda. The analysis of the skull biomechanics of a giant extinct kangaroo indicates that it had a capacity for high-performance crushing of foods.
Researchers propose that the two large holes in a T. rex skull were filled with blood vessels instead of muscles, based on thermal imaging and studies of alligators. This new theory challenges over a century of previous beliefs about T. rex anatomy.
Researchers studied skulls of New World leaf-nosed bats to understand the evolution of specialized diets and faces. They found that heterochrony influenced development, leading to primate-like faces for fruit-eating bats and wolf-like faces for bird- and rodent-eating bats.
Researchers have found that basal meningeal lymphatic vessels function as the main plumbing pipes for cerebrospinal fluid drainage, and their integrity is impaired with aging. This study highlights the role of basal meningeal lymphatic vessels in the development of age-related neurodegenerative diseases such as Alzheimer's disease.
Researchers have confirmed that narwhals and belugas can breed successfully, resulting in a male first-generation hybrid with a bizarre set of teeth. The hybrid's diet was found to be different from both species, suggesting a new phenomenon in the Arctic ecosystem.
Researchers captured detailed images of infants' skulls and brains before and during delivery using 3D MRI, finding that fetal head molding occurs in all seven infants, with different parts of the skull overlapping. The study suggests that infants experience greater skull stresses during birth than previously thought, potentially under...
A new, smaller relative of the mighty Tyrannosaurus rex has been discovered by Virginia Tech paleontologist Sterling Nesbitt. The newly named Suskityrannus hazelae stood 3 feet tall and weighed between 45-90 pounds, with a diet likely consisting of small animals. The fossil dates back 92 million years to the Cretaceous Period.
Zero TE (ZTE) skull MRI demonstrates comparable diagnostic image quality to computerized tomography (CT) for evaluating skull lesions in head trauma patients. Skull structures matched well with images obtained using CT scan, suggesting ZTE as a clinical alternative for certain cases.
A Middle Pleistocene human skull found in southeastern China exhibits morphological similarities to other East Asian archaic human remains but also foreshadows later modern human forms. The discovery provides evidence for regional continuity in human evolution during the region's Pleistocene era.
A 15 million-year-old fossil discovery reveals the ancient Egernia gillespieae was remarkably similar to modern lizards, equipped with a robust crushing jaw. The study sheds light on the evolutionary history of Australia's bluetongue lizards and social skinks.
Fossils found in southeastern China provide insights into Middle Pleistocene human evolution. The discovery sheds light on the continuity of form through time and regional variations among early Asians.
A new study provides fresh insights into the development of the Coelacanth skull and brain, revealing a unique 'intracranial joint' that allows the fish to survive despite its small brain size. The research also sheds light on the evolution of vertebrate species, including humans.
Researchers used X-ray Reconstruction of Moving Morphology (XROMM) to track catfish catching and swallowing prey, revealing coordinated movements of bones and muscles. The findings suggest that different tasks require varying levels of coordination.
Researchers at the University of Minnesota have developed a 3D-printed transparent skull implant that allows for real-time brain activity monitoring. The device, called See-Shell, provides unprecedented control and precision in studying brain function, enabling new insights into human brain conditions.
A Bristol undergraduate student has digitally reconstructed the skulls of two species of ancient reptiles from fossil fragments, revealing significant differences in their appearance and feeding habits. The research provides new insights into the evolution of these prehistoric creatures.
Researchers used biomechanical modeling to determine that the Leptarctus primus skull is most similar to an American badger's, indicating a primarily carnivorous diet but also potential for omnivory. The study uses CT scans and virtual modeling to reconstruct feeding habits in extinct animals.