Articles tagged with Animal Fossils
Researchers have discovered that bacteria play an active role in the decay and preservation of soft-bodied organisms, leading to their fossilization. The study, published in Nature Communications, sheds new light on the process of fossil formation and how it can inform our understanding of early animal evolution.
A rare 520 million-year-old fossil shaped like a 'squashed bird's nest' has been discovered in China, providing new insights into life in ancient seas. The fossil, Nidelric pugio, is a probable 'chancelloriid', a group of bizarre, balloon-shaped animals with defensive spines.
A team of researchers found that most fossil plant lineages from Patagonia are older than the dates predicted by molecular clocks. This study refutes a widely-held idea about how plants and animals arrived at their current distributions, suggesting that molecular clocks may be biased.
New radiocarbon dates reveal American mastodons only lived in the Arctic and Subarctic for a limited time around 125,000 years ago. The results indicate that mastodons suffered local extinction several tens of millennia before human colonization or climate changes at the end of the ice age.
A team of researchers has found fossils indicating complex multicellularity in ancient organisms around 600 million years ago, contradicting previous interpretations. This discovery sheds new light on the evolution of multicellular life and could have significant implications for our understanding of the Cambrian Explosion.
The discovery of three new extinct squirrel-like species confirms that mammals originated at least 208 million years ago in the late Triassic period. The findings support earlier research suggesting a common ancestor for mammals existed during this time, and provide new insights into ancient mammalian evolution.
Scientists have named an extinct swamp-dwelling creature after Mick Jagger due to its oversized lips. The Jaggermeryx naida fossils, found in Egypt's desert, belonged to a family of ancient hoofed animals called anthracotheres.
Research suggests that ancient synapsid relatives, including the famous Dimetrodon, had eyes best suited for low-light conditions at night, 100 million years before the evolution of modern mammals. The findings indicate that nocturnal activity may have evolved in some synapsids as early as 300 million years ago.
A new study estimates the pre-human extinction rate to be 0.1 extinctions per million species per year, 10 times lower than previously thought. This means the current rate is 100 times worse, with extinctions occurring 1,000 times more frequently than in the past.
A 560-million-year-old fossil discovery in Newfoundland, Canada, has provided the oldest evidence of muscle tissue in animals. The find, named Haootia quadriformis, is a rare example of an Ediacaran animal with bundles of fibres similar to those found in modern cnidarians.
Researchers have discovered a definitive link between ancient worm-like creature Hallucigenia and modern velvet worms. A new study reveals that claws play a crucial role in the connection between these two groups, shedding light on the evolutionary tree of life.
A new study reveals ancient hedgehog and tapir fossils from Driftwood Canyon Provincial Park in British Columbia, which lived around 52 million years ago. The discovery fills a significant gap in the geographic distribution of mammals during this period.
Researchers discovered a new fossil organism, Plexus ricei, resembling a tapeworm or modern flatworm, with bilateral symmetry unlike any other Precambrian fossils. The discovery sheds light on the earliest origins of bilaterian animals and their evolutionary history.
A new study finds early fossil sponges exhibiting tetraradial symmetry, a four-fold arrangement of spicules, in well-preserved fossils from the Cambrian period. This symmetry was previously unknown in living sponges and suggests a more complex ancestry than previously thought.
Researchers discovered an ancestor of modern crustaceans with a sophisticated cardiovascular system, including a heart and blood vessels. The finding sheds light on the evolution of body organization in the animal kingdom and suggests that even ancient creatures had internal systems similar to those found in their modern descendants.
Researchers exposed biochemical structure of fossil leaves to visualize the chemistry of exceptionally preserved fossil leaves. The study reveals that the distribution of copper, zinc, and nickel in fossil leaves is almost identical to modern leaves.
Researchers have discovered a new Burgess Shale fossil site in Kootenay National Park, which may be the world's most important animal fossil discovery in decades. The site has yielded over 50 animal species in just 15 days of field collecting, contributing to our understanding of early animal evolution during the Cambrian Period.
Research by Robert Boessenecker uncovers a record of 21 marine mammal species from the San Francisco Bay Area's Purisima Formation, dating back 5-2.5 million years. A new species of fossil whale, Balaenoptera bertae, is discovered, closely related to minke and fin whales.
Journalists Sybille Hildebrandt and Chelsea Wald have been awarded the EGU Science Journalism Fellowship for their projects on palaeontology and soil sciences. They will receive funding to pursue research trips to Canada and Scotland, respectively, in order to investigate key scientific questions.
A team of researchers, including a scientist from Case Western Reserve University, have announced the discovery of a new species of fossil horse from 4.4 million-year-old deposits in Ethiopia. The newly named Eurygnathohippus woldegabrieli had three-toed hooves and grazed grasslands and shrubby woods.
The study provides evidence for the Xingmeng area being in a marine or mainly marine environment at the end of the late Permian period. The discovery of bryozoan and other marine fossils in the upper part of the Linxi Formation supports this finding.
A new fossil species, Niassodon mfumukasi, has been discovered in Mozambique, providing new data on the evolution of ancient mammal relatives. The fossil, dated to approximately 256 million years ago, belongs to a group of synapsids that dominated land communities during the Late Permian period.
A newly discovered species, Rugosodon eurasiaticus, has provided critical insights into the evolution of multituberculates, which dominated Earth's landscapes for over 100 million years. The fossil's well-preserved anatomy reveals adaptations for gnawing plants and animals alike, as well as highly mobile ankle joints.
Scientists have discovered a remarkable diversity of flying reptiles, including 30 species and five genera, from the Cretaceous period in England. The fossils show varying head crests and teeth sizes, suggesting different feeding preferences.
A new species of saber-toothed cat, Rhizosmilodon fiteae, has been discovered in Florida, with fossils dating back 5 million years. The discovery provides significant insight into the evolution and taxonomy of these iconic predators.
A team led by Dr. Natalia Rybczynski has identified the first evidence for an extinct giant camel in Canada's High Arctic, dating back 3.4 million years. The discovery extends the range of camels in North America northward by 1,200 km and suggests a possible adaptation to polar environments.
Researchers reveal extraordinary fossil find of fuxianhuiid arthropod with legs used to shovel sediment into the mouth, shedding light on one of Earth's earliest evolutionary examples of complex animal life. The discovery also features the oldest known post-cephalic nervous system, dating back 520 million years.
A new fossil discovery in southern California challenges earlier claims of a 'killer walrus' existing. The ancient creature was found to have a diet rich in fish, contrary to initial estimates that it preyed on marine mammals.
The discovery of a new fossil in Tunisia reveals that African sea cow ancestors lived in freshwater environments, predating those found in Jamaica. This finding provides crucial insights into the evolutionary origins of these marine mammals.
Researchers use high-energy X-rays and new data extraction protocol to study 360 million year old fossils, shedding light on how early vertebrates moved from water onto land. The discovery reveals a new understanding of the backbone's structure and its functional evolution.
Researchers have identified previously unseen anatomy preserved in fossils using synchrotron-based imaging techniques. The study reveals that a 50 million-year-old lizard skin contains teeth, changing the understanding of this fossil animal.
Geologist Gregory Retallack proposes that ancient Ediacaran fossils, dated to 542-635 million years ago, were remnants of land-dwelling lichen or microbial colonies. The fossils are preserved in iron-colored impressions similar to plant fossils and microbes in fossil soils.
An international team of researchers has discovered a new species of ostracod, a type of crustacean, in 425 million-year-old rocks. The fossils are exceptionally well-preserved, including the shell and soft tissues such as body, limbs, eyes, gills, and alimentary system.
A collection of fossil animals discovered off the coast of Florida suggests that present-day deep-sea fauna may have evolved earlier than previously thought. The fossils show striking similarities to modern equivalents, indicating that ancestors of these animals lived in deep waters for much longer than believed.
A fossilized graptolite has provided evidence that early organisms developed specialized roles and cooperated to construct their homes, much like modern builders. The ancient animals displayed complex structures, including slender branches and hourglasses, indicating an elaborate division of labor.
Researchers have discovered a global pattern in geochemical analysis that sheds light on the unusual preservation process of soft-bodied fossils found in the Burgess Shale. The team found that rapid burial in mud layers with low oxygen levels and the presence of calcium carbonate cement played a crucial role in conserving organic remains.
Researchers have discovered two new extinct camel species in the Panama Canal excavation, extending the distribution of mammals to their southernmost point in Central America. The discovery provides insights into the history of the tropics and the evolution of camels.
Chinese fossils have provided insights into the evolutionary origin of animals from single-cell ancestors. The fossils preserve stages in the life cycle of an amoeba-like organism, revealing a pattern similar to early animal embryology, contrary to previous assumptions.
A species of ancient predator, varanopid 'pelycosaur', survived a major extinction event in the Permian Period. Varanopids had sleek bodies, saw-like teeth, and a diet consisting of over 70% meat, contributing to their long survival.
A team of researchers has developed an artificial neural network model to predict the location of fossil sites. The software uses satellite imagery and maps to identify productive areas in the Great Divide Basin, Wyoming, and has already accurately pinpointed 79% of known fossil sites.
A newly discovered fossil of a mosasaur, with well-preserved soft tissue, is providing scientists with unique insights into the biology of an extinct marine lizard. The study found that the mosasaur was able to minimize its frictional drag in the water and relied on its tail for propulsion.
Fossil moths from 47 million years ago had yellow-green wings that may have helped them blend in with leaves to avoid predators. Researchers reconstructed the original colors using mathematical analysis, providing insights into the evolution of color use among lepidopterans.
Scientists discovered a 3-4 million year old fossil of a whale rib with three tooth marks from a large shark, indicating the whale survived the attack. The whale's death may have been unrelated to its injury and infection.
Researchers have produced the smallest arthropod fossil ever scanned using X-ray CT techniques, a 176-micron-long prehistoric mite trapped in Baltic amber. The study reveals almost 50 million years of evolution among these mites of phoretic behavior using another species.
The discovery confirms that early rodents had origins in Africa and pushes back the date of the first South American rodents to at least 41 million years ago. The fossils found include three new species of rodent from the suborder Caviomorpha, which are most closely related to African rodents.
A well-preserved fossil of a shrew-like mammal discovered in northeast China provides new information about the earliest ancestors of placental mammals. The discovery, dated to 160 million years ago, fills an important gap in the fossil record and helps to calibrate modern DNA-based methods of dating evolution.
The discovery of Juramaia sinensis, a 160-million-year-old fossil, fills an important gap in the fossil record and helps to calibrate modern DNA-based methods of dating. The fossil provides evidence of the date when eutherian mammals diverged from other mammals.
A new study has recovered and analyzed the oldest fossil evidence of fingernails in modern primates, confirming that small body size led to nail development. The discovery provides direct evidence for the evolution of nails in primates and sheds light on the origins of human-like characteristics.
Two new rodent fossils, Mesoprocta hypsodus and Quebradahondomys potosiensis, were discovered in southern Bolivia's highlands. The rodents likely lived in forested habitats, with the larger species possibly foraging on the ground and the smaller one being arboreal.
Scientists have discovered a remarkable relationship between copper and pigment in exceptionally preserved feathers and soft tissues from 120 million-year-old Confuciusornis sanctus and 110 million-year-old Gansus yumenensis fossils. The study, published in Science, reveals original colour patterns using X-ray analysis.
Fossils discovered on Kangaroo Island, Australia, reveal that early animals had excellent vision, with compound eyes containing over 3000 lenses. This suggests a rapid evolution of visual organs due to the adaptive advantage of sharp vision for hunting and finding food.
Scientists have discovered a giant fossilized anomalocaridid, a marine predator that existed for 30 million years longer than previously thought. The new findings shed light on the biodiversity and ecology of marine communities during the Ordovician period.
Scientists have discovered a new species of birch mouse ancestor, Sicista primus, which is 9 million years older than previously known and originated from Asia. The tiny fossil teeth found in sediments in Inner Mongolia provide evidence of the genus' persistence over time without significant morphological changes.
A team of paleontologists discovered that early mammals, including Morganucodon and Hadrocodium, had larger brains than expected for their time. The researchers found that the olfactory part of the brain and the area linked to tactile sensation through fur were enlarged in these early mammals.
Researchers discovered that early mammals developed larger-than-expected brains to enhance their sense of smell. The study used CT technology to reconstruct the brains of two ancient species and found that they had more developed olfactory centers than expected.
The discovery of Liaoconodon hui, a complete fossil mammal from China, provides clear evidence of the transitional middle ear evolution in mammals. The specimen shows cartilage supporting the detached middle ear bones, shedding light on the evolutionary shift from reptiles to mammals.
A team of paleontologists used a living brachiopod species to understand how ancient brachiopods fed. They found that the modern animals generated relatively weak and strong feeding currents when opening and closing their shells.
Scientists discovered fossils of large seaweeds and worm-like animals, revealing brief oxygenation episodes in the Ediacaran Period. The findings suggest that complex eukaryotes evolved tens of millions years after the snowball earth event, which ended 635 million years ago.
African fossil sites between six and five million years ago show signs of a distinct history of increasing isolation, which may have been caused by global climate change. The modern African sub-Saharan mammalian community is believed to be the vestige of a once-wider-ranging fauna.
Scientists used synchrotron X-ray imaging to study an ancient fossilized snake, revealing details of its internal architecture. The results suggest that snakes lost their legs due to slower growth rates or a shorter evolutionary period.