Articles tagged with Paleontology
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.
A new study reports the discovery of exceptionally well-preserved Cambrian-age trilobite fossils from Morocco, providing detailed insights into their anatomy. The fossils' rapid entombment in volcanic ash has preserved both hard exoskeletons and soft tissue appendages with fine details.
Scientists have discovered three new extinct walnut species on a Canadian island above the Arctic Circle, preserved in a unique form of fossilization known as mummification. The fossils provide valuable information about the Earth's climate and ecosystems during the middle Eocene period, when forests covered the region.
The newly discovered Lokiceratops rangiformis is a massive horned dinosaur found in the badlands of northern Montana. It boasts two enormous blade-like horns on its frill, as well as an asymmetric spike, making it one of the most ornate species ever found.
A new species of small, ancient crocodile-like reptile, Parvosuchus aurelioi, has been discovered in Brazil. The specimen, dating back to approximately 237 million years ago, features a complete skull and partially preserved limbs.
A team of researchers created an advanced method for automatic microfossil detection and analysis using AI. The method has shown great potential in utilizing AI to analyze vast amounts of microfossil data, potentially helping geologists better utilize wellbore samples.
Researchers have identified a new genus of fossil goby, †Simpsonigobius, measuring up to 34 mm, found in 18-million-year-old rocks in Turkey. The discovery provides critical insights into the evolutionary history of these fish and highlights the importance of analyzing fossil records using modern methods.
A 6-centimeter-wide fossil of a large cat species, Homotherium, was discovered on the Texas coast. The fossil provided key evidence for the cat's expansion across habitats in Africa, Eurasia, and the Americas.
Australian researchers have identified a new species of ancient 'echidnapus', which exhibits platypus-like anatomy alongside echidna-like features. The discovery sheds light on the evolutionary history of monotremes, revealing six different egg-laying mammals living together in the same area over 100 million years ago.
Scientists discovered a bizarre arachnid with up-armored legs in the Mazon Creek locality in Illinois, dating back to the Carboniferous period. The fossil, named Douglassarachne acanthopoda, has a unique body plan that defies categorization into known arachnid orders.
Researchers identify fossil from Fezouata Shale as ancestor of modern arthropods, solving long-standing paleontological mystery. The discovery fills a gap in the evolutionary tree of life and provides insights into early chelicerate evolution.
Researchers found that baby teeth alongside permanent saber teeth provided stability and protection during the growth process. The 'double-fang' stage lasted up to 30 months, allowing young cats to experiment and learn how to hunt without damaging their sabers.
Researchers at University College Cork discovered fossil frogs with preserved skin remnants, shedding light on their adaptation to life on land. The study found that the excellent preservation of the fossils is due to the replication of ancient skin structures in calcium phosphate.
Researchers have discovered a new species of ancient snake, Vasuki Indicus, which lived around 47 million years ago in India. The snake is estimated to be between 10.9 and 15.2 meters long, making it one of the largest snakes to have ever existed.
Researchers have reconstructed the mouth of an ancient jawless fish using CT scanning techniques, suggesting it was a filter-feeder rather than a scavenger or hunter. The study reveals that early vertebrates had a diverse range of feeding behaviors before jawed animals evolved.
A new reconstruction of the 375-million-year-old fossil fish Tiktaalik reveals that its ribs likely attached to its pelvis, enabling support of the body and potentially leading to the evolution of walking. This discovery provides insights into the major evolutionary transition from fish to four-limbed vertebrates.
A new study by University of Alaska Fairbanks researchers challenges the long-held scientific principle that animals in high-latitude climates are larger than their relatives in warmer climates. The study found that Bergmann's rule applies only to a subset of homeothermic animals and ignores other climatic variables.
The discovery of two newly described fossils from the Jurassic period has provided fresh insights into the early evolution of mammals. The fossils, which include well-preserved skeletal remains of shuotheriids, have allowed scientists to solve a longstanding problem in understanding mammalian tooth shape.
Researchers created a model to predict extinction likelihood based on human hunting and environmental pressures. The model accounted for interactions between humans, animals, and their environment, considering factors like climate change and life history traits.
A researcher at Ohio State University resolves historical inconsistencies in the name of a popular fossil, confirming that Thomas Jefferson named the genus correctly. The correct name helps ensure accurate documentation of the history of life on Earth and its implications for science.
Researchers have uncovered a 270-million-year-old ancient amphibian ancestor in the Smithsonian's collection, naming it Kermitops gratus in honor of Kermit the Frog. The fossilized skull possesses unique features that shed light on the origin of living frogs and other amphibians.
A new species of freshwater dolphin, Pebanista yacuruna, was found in the Peruvian Amazon region and is dated to be 16 million years old. The discovery sheds light on the evolutionary history of freshwater dolphins, revealing a deep connection with South Asian river dolphins.
Scientists have discovered a new species of aetosaur, a heavily armored cousin of modern crocodiles, with an intact armor suit. The suit, called a carapace, is about 70% complete and has unique features that distinguish it from other aetosaurs.
A new study has analyzed fossil records of marine invertebrates over the past 485 million years, identifying key traits that affect resilience to extinction. The research suggests that species with restricted thermal ranges are at greatest risk, and global biodiversity faces a harrowing future.
Scientists have discovered the oldest fossilized forest on Earth, dating back 390 million years, in the Devon and Somerset coast of South West England. The fossils, known as Calamophyton, are a 'prototype' of modern trees, with characteristics such as hollow trunks and twig-like structures.
Paleontologists have discovered a new species of marine lizard with dagger-like teeth that lived near the end of the age of dinosaurs. This finding highlights a dramatically different ocean ecosystem to what we see today, with numerous giant top predators eating large prey.
A controversy in the 1920s pitted American paleontologists against emerging Chinese scientific nationalists over the ownership of fossils. The Americans claimed that fossils were universal and could be exported, while the Chinese argued that they should be viewed as local, contingent property.
Fossils of pony-sized duckbill dinosaurs in Morocco reveal a new species, Minqaria bata, with anatomy resembling European species. The discovery suggests that duckbills swam or floated across open water to colonize North Africa.
A new study quantifies the impact of great fossil sites on our understanding of evolutionary relationships between fossil groups, discovering that the Gobi Desert's well-preserved lizard record shapes understanding more than any other site. The study's findings highlight the importance of exceptional fossil preservation in shaping our ...
Scientists have found polyene pigments in fossilized snail shells that are 12 million years old, providing the world's first evidence of intact pigments in fossils. The discovery was made possible by analyzing the pigments using Raman spectroscopy and sheds new light on the chemical composition of ancient organisms.
Researchers discovered human fossils and artifacts at Ilsenhöhle in Ranis, Germany, indicating that Homo sapiens arrived in cold northern latitudes before Neanderthals disappeared in southwest Europe. The analysis of ancient DNA and zooarchaeological findings suggests that humans consumed a diverse range of animals during their stay.
A new species of tyrannosaur, Tyrannosaurus mcraeensis, has been identified as the closest known relative of Tyrannosaurus rex. Analysis suggests it lived between 71 and 73 million years ago, five to seven million years before T. rex.
A team of researchers, led by Jordan Crowell and Stephen Chester, used modern CT scan technology to analyze the only known preserved picrodontid skull, revealing that they are not closely related to primates. The study highlights the importance of revisiting old specimens with updated techniques to examine them.
Researchers have found evidence that Nanotyrannus lancensis is a separate species from Tyrannosaurus rex, with narrower jaws, longer legs, and bigger arms. The new analysis suggests these animals were nearly full-grown when they died, with estimates suggesting they reached 900-1500 kilograms and five metres in size.
Researchers have discovered that insect larvae already used various anti-predator strategies, such as spines, hairs, and camouflage, in the Cretaceous period. These findings provide insights into the evolution of defense mechanisms in insects and shed light on the ongoing biodiversity crisis.
A new study has shed light on the convergent evolution of defensive enrollment in arthropods by analyzing 3D-preserved trilobite soft tissues. The fossils, which date back to the Ordovician Period, show that trilobites used a unique mechanism to protect their vulnerable soft tissues with their hard exoskeletons.
A breakthrough discovery has found a well-preserved juvenile Gorgosaurus skeleton with stomach contents that provide insight into the diet and ecological niches of Tyrannosauridae as they grow. The findings suggest that juvenile tyrannosaurs primarily preyed on small dinosaurs, differing from their adult counterparts.
Researchers have discovered lipid fossils in ancient rocks, providing clues about the evolution of life. The findings suggest that a shift in animal feeding strategies occurred around 1.6 billion years ago, with some species abandoning phytosterol production as they obtained this nutrient from algae.
Researchers uncover 10 new trilobite species in Thai sanctuary, shedding light on Cambrian-Ordovician period and connecting Thailand to parts of Australia. The discovery helps date the age of fossils and better understand global geography.
A new fossil assemblage in Brazil has added to the complexity of classifying silesaurid phylogeny, a family of dinosauriforms that lived during the Triassic period. The study suggests that these animals were part of the evolutionary history of dinosaurs, but their classification remains uncertain due to ambiguous anatomy.
The discovery of a new early Jurassic dinosaur species, Qianlong shouhu, reveals that the first dinosaur egg was likely leathery and relatively small. The study also found that the transition in egg morphology occurred early in theropod dinosaur evolution.
Frogs from the genus Eleutherodactylus are geologically the oldest Caribbean vertebrates to be found in Florida. They arrived in North America much earlier than previously thought, with evidence suggesting they reached the peninsula through overwater dispersal on flotsam or other buoyant debris.
Researchers have successfully engineered a soft robotic replica of a 450-million-year-old marine organism, pleurocystitid, to better understand its biomechanical factors and locomotion. The study introduces the field of Paleobionics, which uses Softbotics to explore evolution and animal design.
Researchers discovered two extremely rare fossil lampreys from the Jurassic of northern China, shedding new light on lamprey evolution. The study revealed that these ancient creatures had a feeding apparatus strikingly similar to that of living pouched lampreys, which are flesh-eating species.
The new species of mosasaur, named after the Norse sea serpent Jormungandr, is estimated to be around 24 feet long and has a mosaic of features seen in two iconic mosasaurs. The discovery sheds light on the evolutionary history of these aquatic lizards and provides new insights into their relationships with other reptiles.
A nearly intact fossilized bat skull discovered in a 50-million-year-old cave has provided crucial insights into the evolution of bats and their use of echolocation. The find, part of an analysis published in Current Biology, suggests that early bats may have used a form of echolocation similar to that employed by modern species.
A new study reconstructs the well-preserved skull of Pierolapithecus catalaunicus, a key fossil in understanding great ape and human evolution. The researchers found that the species shares similarities with both fossilized and living great apes, but also has distinct facial features not found in other Middle Miocene apes.
The discovery of a complete Anachlysictis gracilis skeleton in Colombia provides new insights into the species' weight, estimated at around 23 kg, and diet as a hypercarnivore. The fossil's analysis suggests it preyed upon small mammals, such as marsupials and rodents, and possibly primates.
Researchers discovered early Cambrian microfossils preserving introvert musculature of cycloneuralians, a group of animals that include roundworms and horsehair worms. The preserved musculature consists of four groups of muscles, differing from basal animals in terms of topology.
Researchers found preserved molecular fragments of the pigment phaeomelanin in 10-million-year-old frog fossils, which could help reconstruct ancient animal colors. This discovery may be a first step towards understanding the evolution of toxic phaeomelanin.
A new study found that mammals and their relatives that survived challenging times made it because they had newer, more novel characteristics. These findings challenge the conventional wisdom of mammal evolution, suggesting that having new traits can be key to succeeding in the aftermath of a catastrophe.
A new modeling method powered by interconnected processors removed human bias from the debate over dinosaurs' demise. The study suggests that the outpouring of climate-altering gases from the Deccan Traps alone could have been sufficient to trigger global extinction, consistent with volcanic eruptions contributing to the mass extinction.
Researchers have extracted ancient DNA from Caribbean parrots, revealing two species were more widespread and diverse in the past. The study helps explain how parrots became the world's most endangered group of birds, with many island populations gone extinct.