Articles tagged with Paleontology
A research team discovered fossilized teeth and vertebrae in the Dominican Republic, confirming that large, terrestrial predators like sebecids once inhabited the Caribbean. This finding supports the GAARlandia hypothesis, suggesting temporary land bridges allowed animals to travel between South America and the Caribbean.
A new study published in Proceedings of the Royal Society B: Biological Sciences sheds light on how a 252-66 million-year-old 'marine revolution' influenced foraminifera diversity and survival. The study found that calcareous forams flourished after the MMR, becoming dominant types living today.
Researchers analyzed a rare fossil bone and found it shared characteristics with platypuses, suggesting that ancient echidnas originated from a semi-aquatic ancestor. This discovery adds weight to the idea that stem-monotremes started off as semi-aquatic animals.
Researchers found that ancient Homo sapiens used tailored clothing and ochre-based sunscreens to protect themselves from harmful UV light during the Laschamps excursion. This period of reduced magnetic field strength allowed more cosmic radiation to reach Earth's surface, potentially contributing to the decline of Neanderthals.
A Pleistocene-age hominin jawbone from Taiwan has been identified as belonging to a Denisovan, providing direct molecular evidence of their presence outside Siberia. The discovery offers new insights into the morphological traits of this enigmatic hominin lineage.
Researchers studying ancient rhino teeth found at Nebraska's Ashfall Fossil Beds State Historical Park discovered that prehistoric rhinos lived in large herds. The animals' limited mobility suggests they didn't respond to the volcanic eruption or migrate seasonally, instead likely dying from prolonged exposure to ash and lack of food.
A study found that a hydrothermal system created by an asteroid impact helped marine life flourish in the Gulf of Mexico for at least 700,000 years. The system generated and circulated nutrients, supporting high-nutrient environments that favored certain types of plankton.
A 131-million-year-old pregnant ichthyosaur named Fiona has been studied for her well-preserved skeleton, which provides details about the anatomy of these marine predators. The researchers also found evidence of her final meal and a healed injury in her fin bones.
Bacteria evolved oxygen tolerance over billions of years, preceding the Great Oxidation Event (GOE) by 1-2 billion years. This adaptation may have driven the origin of oxygenic photosynthesis in Cyanobacteria and influenced the Earth's atmosphere.
A new species of multisegmented fossil has been discovered in the Soom Shale with exceptionally preserved insides, including muscles, sinews, and tendons. The fossil, named Keurbos susanae, provides a unique glimpse into the evolutionary relationships of ancient arthropods.
A 30,000-year-old vulture fossil from Central Italy has preserved microscopic feather pigment structures in a mineral phase called zeolite. This new mode of preservation extends the understanding of soft tissue preservation in volcanic rocks.
Early mammals that lived alongside dinosaurs were likely covered in dark and dusky greyish-brown fur, hinting at their ecological niche as nocturnal animals. Their pelage coloration played an important role in communication, camouflage, thermoregulation, and protection.
Scientists suggest that wind turbine blades will fossilize into the far future due to their composition of fibreglass and epoxy resin. These relics will provide a unique puzzle for future paleontologists to reconstruct and understand the human-made technology behind them.
Researchers found highly efficient imaging systems in ancient insect larvae, comparable to modern antlions. The discovery supports earlier findings on the diversity of Cretaceous lacewings and provides the oldest fossil evidence of such eyes.
Researchers compared feathers and bodies of flightless birds and their flying relatives, finding that some features change relatively quickly. The study sheds light on evolution of complex traits that lose original function, and could help reveal which fossil birds were flightless.
Fossil discovery in Australia rewrote the evolutionary history of theropod dinosaurs, revealing a predator hierarchy unique to Cretaceous Australia. The findings showcase the world's oldest known megaraptorid fossils and the first evidence of carcharodontosaurs in Australia.
A nearly complete skull of the ancient apex carnivore Bastetodon has been discovered in the Egyptian desert, revealing a new species of hyaenodonta. The discovery sheds light on the evolution of hyaenodonts and their global distribution, with findings suggesting they spread from Africa to Asia, Europe, India, and North America.
Researchers will explore non-pathological inflammation in mammals to build on findings from bird studies, with implications for human health and skeletal growth. The project aims to investigate the role of inflammation in bone fusion events throughout the skeleton.
A fully preserved skull of Diatryma, a 45-million-year-old flightless bird, has been discovered in the Geiseltal Collection at Martin-Luther-Universität Halle-Wittenberg. The fossil, which was initially misclassified as a crocodile skull, provides new insights into the evolution of animals during the Eocene Epoch.
A new study identifies five snow leopard fossils in China, France, and Portugal dating back to one million years ago. The findings suggest that snow leopards adapted to rocky, barren terrains rather than high altitudes, contradicting traditional assumptions.
Close examination of kangaroo tooth microwear reveals a generalist diet among Australian species during the Late Pleistocene. The findings support the idea that human hunting, rather than climate adaptation, drove megafaunal extinction in Australia.
Researchers compiled a reference framework of isotope compositions indicating the type of diet for extant reptiles, providing a useful dataset to reconstruct the diet of fossil reptiles. The analysis showed that calcium isotope ratios are higher in insectivorous reptiles and lower in herbivores and carnivores.
A new study reveals fossilized chewing lice eggs in mid-Cretaceous amber, associated with enantiornithine feathers. The discovery provides insight into early coevolution between bird hosts and ectoparasites, shedding light on the origins of modern lice.
Researchers have discovered a new dinosaur species in present-day Wyoming that challenges the mainstream view on dinosaur emergence and spread. The 230-million-year-old fossil remains suggest dinosaurs were present in the northern hemisphere millions of years earlier than previously known.
A new study reveals the oldest known example of an evolutionary arms race in fossilized shells from the Cambrian period. The researchers found that a small shelled animal distantly related to brachiopods and an unknown marine animal were engaged in a microevolutionary arms race, with each species adapting and evolving in response to th...
The Virginia Tech analysis extends the chart of life by nearly 1.5 billion years, mapping the rise and fall of ancient life from the Proterozoic Eon. The study reveals that global ice ages accelerated the pace of evolution in species counts.
University of Leicester researchers use UV torches to reveal tiny details distinguishing Pterodactylus from other fossils, uncovering nearly 50 'hidden' relatives and reconstructing its life history from hatchling to adulthood.
Scientists at La Brea Tar Pits have identified a mysterious fossil seed, unlocking key findings on past environmental changes and megafaunal extinction. The discovery highlights the vulnerability of junipers to modern climate change and informs conservation efforts.
A new study has uncovered the diversity of Proterozoic eukaryotes, showing that severe Cryogenian glaciations drove a pivotal shift in their evolution. The research provides valuable insights into the relationship between environmental changes and the evolutionary history of life on Earth.
A fossil therapsid was found in Mallorca with a skull hole for the jaw muscle and structures that evolved into mammals' middle ear bones. The discovery changes scientists' understanding of when therapsids evolved and tells us about where we come from.
A nearly complete leg and well-preserved fossils from a small to medium-sized carnivorous animal were found in Mallorca. The discovery, dating back 270 million years, sheds light on the evolution of mammals.
A new study has uncovered a rare plant fossil with unusual flowers, fruits, and stems that does not belong to any living family or genus. The discovery suggests there may be more diversity in the fossil record of flowering plants than previously recognized.
Researchers discover 555-million-year-old worm-like organism, Uncus dzaugisi, in Precambrian rocks of Nilpena Ediacara National Park. This tiny fossil represents the oldest confirmed member of Ecdysozoa and offers direct evidence of early ecdysozan life forms from the Precambrian.
Researchers find fossil evidence of two distinct human species, Homo erectus and Paranthropus boisei, living contemporaneously near Lake Turkana in Kenya. The discovery sheds light on human evolution, cooperation, and competition among early hominins.
Researchers discover two distinct patterns of bipedalism among Pleistocene hominids in East Turkana region, suggesting contemporaneous use of lake habitats by different species. The findings provide evidence for the co-existence of multiple hominid lineages and challenge previous inferences based on fossil dates.
A team of researchers discovered fossil amphibians preserved in cylindrical burrows in Wyoming, providing insights into their adaptation to extreme seasonal conditions. The ancient creatures, about a foot long, had underdeveloped arms and likely used their heads to dig burrows during the dry season.
A new pterosaur species reveals key transitional changes between early and later groups, shedding light on the evolution of these flying reptiles. The complete specimen helps bridge the gap in understanding how they transformed from smaller to larger sizes.
A new study offers insight into how some colony-forming animals, like ants or bees, may have evolved their own system for divvying up work millions of years ago. Bryozoans, small aquatic animals, discovered to have evolved unique abilities after losing feeding ability, survived by sharing resources with other members of the colony.
A new study reveals that the Amazon rainforest is threatened by global warming and deforestation, which can trigger a domino effect on the entire system. The analysis of residual pollen and carbon residues suggests that the Atlantic Meridional Overturning Circulation (AMOC) plays a crucial role in shaping the Amazon ecosystem.
Research suggests that Indigenous population expansion and cultural burning practices led to a 50% reduction in shrub cover in southeast Australia, limiting wildfire intensity. Reintroducing these practices could curb future fires.
A team of researchers has unveiled a spectacular new fossil arthropod named Lomankus edgecombei, preserved entirely in fool's gold. The specimen belongs to a group called megacheirans, which were thought to be extinct during the Ordovician Period.
A new fossil mammal, Heleocola piceanus, has been discovered in Colorado, dating back to the Late Cretaceous period. The animal, estimated to weigh 2 pounds or more, is a rare find among mammals from this time period.
Researchers are developing energy-efficient robots inspired by ancient fish and fossils to simulate their anatomy and behavior. The team aims to test hypotheses about how early animals evolved and moved, providing insights into the transition from water to land.
Scientists discovered two new species of predatory birds in the Hell Creek Formation, which lived alongside dinosaurs like T. rex 68 million years ago. The fossils indicate that these birds could have hunted small mammals and baby dinosaurs using their powerful foot bones.
Scientists discovered ancient stromatoporoids survived the Late Devonian extinction and continued to thrive as major reef-builders during the Carboniferous Period. The findings shed light on the resilience and adaptability of marine ecosystems.
A new study reveals that Earth's surface temperature has varied more greatly over the past 485 million years than previously thought. The study, co-led by the Smithsonian and University of Arizona, confirms that carbon dioxide is strongly correlated with global temperatures across geological time.
A new study finds that a trilobite species from upstate New York has an additional pair of head appendages, helping researchers better understand how trilobite heads are segmented. The discovery expands on previous findings and proposes a model for how appendages were attached to the head.
A new study finds that the ancient bird Longipteryx ate fruits, contrary to previous hypotheses that it feasted on fish or insects. The discovery was made by analyzing fossilized seeds in the bird's stomach, which suggest a mixed diet including fruits and possibly insects when they were not available.
Researchers found three new Thylacine species in Australian fossils, including a large species weighing up to 11kg and a highly carnivorous one with elongated cutting blades. These discoveries reveal the diversity of marsupial carnivores during the late Oligocene and challenge previous ideas about Australia's ecosystem.
Scientists have discovered that some pterosaurs flew by flapping their wings while others soared like vultures. The new findings were made possible by the discovery of remarkably well-preserved fossils in Jordan, including a species with a five-meter wingspan and unique internal structures.
A recent meta-analysis found that the Messinian Salinity Crisis significantly altered Mediterranean biodiversity, with 66.8% dissimilarity between species before and after the crisis. The study also showed that only a few endemic species survived the event, while new species were introduced following the reconnection to the Atlantic.
A team of sedimentologists and stratigraphers found that gap regularity, not incompleteness, determines evolutionary history reconstruction. Incompleteness can be overcome with geological knowledge, enabling accurate reconstruction of evolution hundreds of millions of years ago.
A study using plant fossils from East Asia found that evergreen broad-leaved forests occurred in different temporal-spatial patterns than previously thought. The research indicates a diverse occurrence of EBLFs due to the multistage evolution of Asian monsoon.
A new species of the extinct genus Ontocetus, named Ontocetus posti, has been discovered in the North Atlantic. The fossil shows surprising similarities to the modern walrus, highlighting convergent evolution and adaptation to suction-feeding.
A new study from Simon Fraser University has provided the clearest picture yet of when mammoths roamed Vancouver Island. The study found that mammoths lived on the island up to 45,000 years ago, with the youngest sample dated around 23,000 years old.
A 500-million-year-old fossil reveals the earliest known ancestors of modern molluscs were flat, armoured slugs covered in chitinous spines. These findings provide a unique window into early mollusc evolution and challenge current understanding of their origins.
A new species of extinct crocodile relative, Benggwigwishingasuchus eremicarminis, has been discovered in Nevada, USA. The species reveals that pseudosuchian archosaurs ruled the shores across the Middle Triassic globe between 247.2 and 237 million years ago.
A newly discovered fossil, Gaiasia jennyae, reveals a giant salamander-like creature that was a top predator in the ice age before dinosaurs. The creature's unique features, including its toilet seat-shaped head and interlocking jaws, suggest it was an ambush predator.
Fine roots' lifespan varies across tree species, with evolutionary history playing a key role in shaping global patterns. Phylogeny, root traits, and environmental factors regulate fine root lifespan, with gymnosperms having longer lifespans than angiosperms.
A new study using museum collections reveals that ammonites were diverse and thriving across the globe just before their extinction in the Late Cretaceous. The research found that the balance of speciation and extinction rates varied by region, contradicting previous theories.