Articles tagged with Animal Fossils
A team of paleontologists has discovered that countless sea anemone fossils were misinterpreted as jellyfish due to their soft bodies. However, when re-examined with a new perspective, the fossils were found to be anemones, showcasing the importance of fresh thinking in fossil interpretation.
Researchers find first Canadian specimen of extinct ant Titanomyrma, sparking debate on how it dispersed across the Northern Hemisphere. The discovery challenges previous theories on hyperthermals and suggests a more complex picture of ancient climate and migration patterns.
A 250.8 million-year-old fossil find reveals complex marine ecosystems on Earth just one million years after the Permian-Triassic mass extinction, contradicting long-held theories. The discovery provides insights into life's rapid recovery from extreme crises and necessitates a re-evaluation of early Triassic ocean conditions.
The discovery of stone tools and cut-marked animal bones at the Nyayanga site in Kenya offers new insights into the dawn of stone technology. The artifacts, dating back 2.9 million years, include hammerstones, cores, and flakes, which were used to process a wide range of materials and foods.
A 319-million-year-old fossilized fish has provided the oldest example of a well-preserved vertebrate brain, shedding new light on the neural anatomy and early evolution of ray-finned fishes. The discovery reveals that brain evolution in these animals unfolded more complexly than previously thought.
A 550-million-year-old fossil of Dickinsonia was discovered in India, but it turned out to be a beehive. The correction puts the geologic and life history of India back into contention, with the rocks potentially being one billion years old.
Fossils of a type of sea worm, Iotuba chengjiangensis, have provided new insights into the evolution of annelid worms. The discovery suggests that these worms diversified into different lineages around 515 million years ago, during the Cambrian explosion.
Researchers analyzed ancient teeth from Homo erectus and great apes to reveal annual cycles in tooth enamel, providing insights into their diets and seasonal food supplies. The study shows that humans and great apes had distinct dietary patterns, with humans exhibiting less pronounced peaks and lower Sr/Ca values.
A new study reveals that ancient chimaeras were suction feeders, contrary to their modern shell-crushing behavior. The research, led by the University of Birmingham, analyzed a rare three-dimensional fossil and found evidence supporting this alternative feeding method.
A team of scientists found evidence that 37 ichthyosaurs died in the same location, suggesting they were migrating to give birth over hundreds of thousands of years. Geochemical tests revealed no signs of environmental disturbance or mass stranding events, pointing to a more plausible explanation for their demise.
A recent study on fossil katydids from the Mesozoic Era provides novel insights into the evolution of acoustic organs and behavior. The research team discovered exceptionally preserved Mesozoic katydids with the earliest known insect ears, extending the age range of modern-type auditory tympana by 100 million years.
A 120-million-year-old bird fossil called Yuanchuavis kompsosoura reveals a mosaic of dinosaurian and bird traits, including a feathered body with wings, a toothed mouth, and an immovable dinosaurian palate. The study provides clues about the origin of cranial kinesis, a fundamental feature of modern bird skulls.
Scientists have solved a decades-long puzzle about why ancient tetrapod fossils in Ireland's Jarrow Assemblage had their internal bone structure altered. The team used CT scans and laser ablation to analyze the chemistry of the bones, finding evidence of superheated fluids that cooked and melted the bones.
A new diapsid reptile species has been discovered in Oklahoma with evidence of dental pathology, providing insights into its biology and evolution. The fossil, dated to the early Permian period, was analyzed using neutron tomography and revealed abnormalities in its teeth.
Researchers found evidence of fibrolamellar bone in early tetrapod Whatcheeria, suggesting rapid juvenile growth. This contradicts the long-held assumption that slow growth was ancestral for tetrapods, and instead reveals a more complex life history.
Scientists from the Australian National University have discovered that the world's oldest large organisms, Ediacara biota, ate bacteria and algae sourced from the ocean floor. The findings provide new insights into the physiology of our earliest animal ancestors.
Scientists discovered that the first complex, multicellular life forms on Earth were wiped out 550 million years ago due to oxygen loss in the oceans. The researchers used nearly every known Ediacaran animal's environment and habits to disprove previous explanations for their disappearance.
A new study suggests that ray-finned fish diversified earlier than previously thought, accumulating small changes before the Carboniferous period. The fossil specimen Palaeoneiros clackorum shows features typical of younger species, indicating a more complex picture of species diversification.
Two new specimens, Mieridduryn bonniae, have been discovered in a Welsh fossil deposit, providing insights into the evolution of arthropods. The fossils feature striking similarities to Opabinia, suggesting that they may be related to modern arthropod larvae.
Scientists have discovered exceptionally well-preserved fossils in China that date back 514 million years, revealing the first animals to build hard and robust skeletons. The fossils show features characteristic of modern jellyfish and cnidarians, including a tubular structure made of calcium phosphate.
Research suggests that varying oxygen levels in the Earth's atmosphere may have spurred the emergence of early animal life forms. The study reveals oscillations between high and low oxygen levels over 1.5 billion years, providing a new perspective on the development of animals.
A new fossil specimen discovered in California reveals that the first saber-like canines evolved in an early nimravid around 40 million years ago. This finding highlights the quick diversification of carnivorous mammals after the middle Eocene climatic optimum.
New research suggests that the first animals on Earth could have evolved earlier than previously thought. Polar marine creatures' survival strategies might hold clues to understanding this phenomenon. The study examines the evolution of life in extreme cold and icy periods, with implications for our understanding of animal origins.
A team of researchers has discovered a 439-million-year-old ancient 'shark' that predates the earliest jawed fish and is believed to be humans' oldest jawed ancestor. The fossil, named Fanjingshania, features an external bony armor and multiple pairs of fin spines.
The discovery of complete early Silurian jawed fishes is a significant finding that sheds light on the origin of jaws in vertebrates. The two species, Xiushanosteus mirabilis and Shenacanthus vermiformis, have revealed key features about their body shape, form, and evolution.
Scientists have discovered 439-million-year-old remains of a toothed fish in China that suggest the origins of modern osteichthyans and chondrichthyans. The fossils, named Qianodus duplicis, possessed spiral-like dental elements with multiple generations of teeth.
A 518-million-year-old fossilized worm named Wufengella has shed light on the evolution of three major animal groups: brachiopods, phoronids, and bryozoans. The discovery reveals that these ancient animals shared a common ancestor with segmented worms.
Scientists discover Opisthiamimus gregori, a new extinct species of lizard-like reptile that lived in Jurassic North America alongside dinosaurs. The discovery sheds light on the evolution of rhynchocephalians, an order that diverged from lizards over 230 million years ago.
A new study reconstructs the skeletal structure of Coelurosauravus elivensis, a Late Permian reptile that likely used tree canopy changes to facilitate its evolution. The research reveals the gliding apparatus was supported by either the gastralia or musculature of the trunk.
Paleontologists at Tübingen University's Senckenberg Centre have discovered a previously unknown genus and species of dinosaur, Tuebingosaurus maierfritzorum. The herbivore lived in the Swabian Alb region from 203 to 211 million years ago, displaying similarities with large long-necked sauropods.
Researchers used high-resolution imaging techniques to identify a new ant species and genus, †Desyopone hereon gen. et sp. nov., from 16-23 million year old Ethiopian amber.
Researchers analyzed 306-million-year-old fossilized animal feces and found biomolecular information about long-extinct diets. The study revealed that an unidentifiable extinct animal was a meat-eater or on a predominantly carnivorous diet, with high proportions of cholesterol-derived molecules and a lack of plant-derived biomarkers.
Researchers have used state-of-the-art technology to study the prehistoric Trilophosuchus rackhami, a tiny crocodile found in north-west Queensland. The analysis reveals distinctive ridges on its skull and brain cavity similarities with distantly related terrestrial extinct crocs from Africa and South America.
A large international team has reexamined the Saccorhytus microfossil and determined that it is actually a protostome, not a deuterostome as previously believed. This finding contradicts current understanding of animal evolution, suggesting a significant gap in the fossil record.
Research team analyzed hundreds of new fossil specimens to clarify the anatomy and evolutionary affinity of Saccorhytus. They found evidence supporting its classification as an ecdysozoan, including a terminal mouth, cuticle integument, and radially arranged circumoral structures common to Cambrian and extant ecdysozoans.
Scientists discovered that an early bird species called Jeholornis ate fruits and seeds, helping plants dominate the world today. The bird's skull shape and stomach contents showed evidence of a seasonal diet with whole fruits during fruit season.
Large carnivorous dinosaurs, such as Tyrannosaurus rex, developed elliptical or oval eye sockets to absorb impact during high-speed bites. Researchers analyzed 500 dinosaur species and found these unique shapes only in large predators with skull lengths over 1m.
Researchers discovered that specific tissue chemistry governs the likelihood of organs being preserved in fossils. The study found that a decaying fish's internal organs decompose in a 'soup' together, and their pH levels determine whether they'll be replaced by minerals.
Researchers discovered the earliest direct evidence of brood care among insects in the Middle-Late Jurassic Daohugou Biota. Fossils of a water boatman insect showed it carrying a cluster of eggs on its left mesotibia, providing protection from predation and environmental risks.
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.
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.
A team of international scientists found that endothermy appeared in mammalian ancestors about 233 million years ago, well before the origin of mammals. Fossils from South Africa's Karoo region played a key role in this discovery, providing an unbroken record of life's evolution.
A new study published in Zootaxa confirms the discovery of Australia's first fossil vulture, Cryptogyps lacertosus, which lived during the late Pleistocene period. The bird was a scavenger, not a hunter, and its presence highlights the diversity of Australian megafauna and ecosystem implications.
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 study comparing ancient lungfish fossils to modern brain structures reveals the evolutionary history of these ancient fish. The research suggests that lungfish relied on their sense of smell to navigate environments, unlike other fish that use sight more powerfully.
A new study reveals that bottom burrowing animals were among the first to recover after the end-Permian mass extinction. The research, led by Dr. Xueqian Feng, used ancient sea bed burrows and trails to reconstruct the recovery stages of various animal groups.
Flinders University researchers describe a new genus of giant fossil kangaroo from PNG, diverging from Australian kangaroos and belonging to a unique species. The discovery sheds light on New Guinea's faunal history, with the animal likely evolving from ancient lineages in the late Miocene epoch.
Fossilized specimens of Vampyronassa rhodanica, an ancient cephalopod related to octopus and squid, display robust suckers for active hunting. The species is thought to have used these suckers to create a watertight seal and manipulate prey.
Two fossil skulls of a 12- to 15-million-year-old hyena from China suggest the animal was on its way to becoming an insectivore, like the modern aardwolf. The fossils show characteristics intermediate between those of bone-cracking hyenas and termite-eating aardwolves.
A 390-million-year-old fossil vertebrate has been classified as a member of Sarcopterygii, a group of lobe-finned fishes. The discovery sheds new light on the evolutionary history of four-limbed animals and their early ancestors.
Researchers used high-resolution micro-CT scans to reveal key features in Palaeospondylus fossils, placing it as an early ancestor of tetrapods. The study resolves long-standing evolutionary mysteries, including the lack of teeth and dermal bones in the fossil record.
A team of scientists has confirmed that the earliest humans in Australia consumed eggs from a two-metre tall bird called Genyornis, which became extinct 47,000 years ago. The ancient proteins found in eggshell fragments provide conclusive evidence for this species.
Fossil finds from the High Alps reveal giant ichthyosaurs that lived around 205 million years ago, measuring up to 20 meters in length. The discovery sheds new light on these prehistoric creatures and their paleobiological implications.
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.
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 recent study combining climate data with fossil records of large mammals in Africa found that times of erratic climate change do not lead to major evolutionary changes. The research, published in the Proceedings of the National Academy of Sciences, suggests that environmental variability and species turnover may not be closely related.
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.
The Chengjiang Biota, an ancient group of animal fossils, has been found to inhabit a shallow-marine, nutrient-rich delta environment. This discovery sheds new light on the possible causal factors for the Cambrian Explosion and how early animals adapted to stressful conditions.
A study published in Current Biology reveals that ancient dolphins, including the false killer whale and orca, ate fish instead of other marine mammals. The findings suggest that these species evolved similar cranial anatomy and feeding behaviors within the last five million years.