Articles tagged with Animal Fossils
Researchers found that ancient horse body sizes shrunk over time due to faster reproduction rates and shorter lifespans. In contrast, big tapir ancestors grew larger as they lived longer and had more resources for reproduction. The study provides new insights into mammal evolution using exceptionally preserved fossils from Germany.
Researchers discovered hundreds of fossilized rodent pellets at La Brea Tar Pits, dating back ~50,000 years. The find provides a unique glimpse into the past climate and ecosystems of Ice Age Los Angeles.
A study suggests that zinc isotope analysis can reconstruct past food webs in ancient mammals by analyzing stable isotopes in fossil tooth enamel. The results show distinct patterns in δ66Zn values for carnivores, omnivores, and herbivores, with potential applications in archeological and paleontological research.
The extinct turtle Stupendemys had a carapace reaching almost three meters and weighed an estimated 1,145 kg, making it one of the largest turtles to have existed. Males carried horns on their shells, indicating two sexes with sexual dimorphism.
A German research team has identified bony fish as particularly sensitive to climate change, with snails and oysters being less threatened. The study combines fossil data with experimental studies, providing a basis for future collaboration and more precise predictions of species extinction.
Researchers have discovered a fossilized scorpion from the Silurian period, revealing its transition from aquatic to terrestrial life. The ancient animal's internal organs show similarities to modern-day scorpions and horseshoe crabs, indicating it was pre-adapted for life on land.
Researchers found a 550-million-year-old fossilized digestive tract that challenges our understanding of early animal evolution. The discovery resolves the debate over the evolutionary positioning of cloudinid fossils from the Ediacaran Period.
A team of researchers led by the University of Iowa has dated the last known appearance of Homo erectus at Ngandong in Indonesia between 108,000 and 117,000 years ago. The site is considered the last known settlement of this direct ancestor to modern humans.
A new study describes a 480-million-year-old fossil named Athenacrinus broweri, which helps rewrite the family tree of sea lilies. The fossil's arm structure reveals that modern sea lilies evolved from ancient ancestors with plates in their bodies similar to those found in earliest crinoid arms.
A new study reveals that animal-like embryos existed 609 million years ago, long before the emergence of definitive animals. The research found that Caveasphaera fossils displayed stages of development similar to those seen in living animals, including humans.
Researchers discovered fossils of Caveasphaera, 609 million-year-old single-celled relatives of animals, revealing evidence that animal-like embryonic development evolved before complex animals appeared in the fossil record.
A team of scientists has discovered ancient fossil teeth in the Yukon, which are believed to belong to a long-extinct cousin of modern rhinoceroses. The discovery provides a gap in the fossil record and sheds light on the migration patterns of animals during the Tertiary Period.
A newly discovered tetrapod, Parmastega aelidae, provides insight into the earliest stages of evolution from fish to amphibians. The fossil, dating back 372 million years, exhibits fish-like characteristics and may have never left the water.
Researchers found that ancient plant and animal communities differed significantly from today's, with a greater diversity of megaherbivores and non-ruminant species. The study suggests that environmental changes driven by grassland expansion and arid climate pulses may have influenced human evolution.
A fossil skull found in a Bavarian town in the 1770s has been recognized as Mystriosaurus laurillardi, a now-extinct species that lived in tropical waters during the Jurassic Period. Researchers have also identified another skull discovered in Yorkshire, belonging to the same species.
A 550-million-year-old fossil found in China reveals that mobile and segmented animals evolved by the terminal Ediacaran Period, providing crucial evidence for the origin of segmentation. The discovery also helps scientists understand the producers of Ediacaran trace fossils.
A team of scientists has discovered fossils of an ancient animal species, Yilingia spiciformis, which date back approximately 550 million years. The fossilized remains and trails left by the creature provide conclusive evidence of segmented and mobile animals evolving during this time period.
Researchers found sex biases in fossil and museum collections of mammals, with approximately 75% male bison specimens and 64% male bear specimens identified. The study suggests that larger male ranges may increase their fossilization potential, potentially leading to biased scientific analyses.
Researchers discovered a remarkably complete 3.8-million-year-old cranium of Australopithecus anamensis in Ethiopia, revealing new insights into human evolution. The fossil finds contradict the long-held notion of a linear transition between A. anamensis and its descendant species A. afarensis.
A recent study from Uppsala University and Polish Academy of Sciences describes the contents of three Jurassic pterosaur coprolites, revealing a diet rich in foraminifera, small shells, and polychaete worms. The findings suggest that these Late Jurassic pterosaurs were filter feeders, similar to modern flamingos.
A team of scientists has discovered the world's smallest fossil monkey, weighing less than half a pound and measuring just double the size of a pin. The 18-million-year-old Parvimico materdei helps fill a gap in the record of monkey evolution.
A 165-million-year-old fossil of Microdocodon gracilis, a tiny shrew-like animal, reveals the earliest example of modern hyoid bones in mammal evolution. This discovery sheds light on when early mammal ancestors first evolved sophisticated hyoid bones that enabled them to swallow food like modern-day mammals.
A team of researchers from the University of Manchester has made a groundbreaking discovery in the field of paleontology, revealing colorful pigments from ancient mouse remains. The study used X-ray imaging to analyze fossils over 3 million years old, unlocking secrets about key pigments and their evolution.
Museum volunteers have discovered a new species of extinct heron, Taphophoyx hodgei, at the Montbrook fossil site in North Florida. The bird is believed to be most closely related to tiger-herons and was named after landowner Eddie Hodge, who has allowed researchers to excavate the site on his property.
A collection of 4,000 fossils from the Texas Gulf Coast 11-12 million years ago reveals a diverse ecosystem with species like elephants, rhinos, and alligators. The fossils also include horse breeds, camels, and several carnivores.
A newly identified species of 150 million-year-old marine crocodile has given insights into how a group of ancient animals evolved. The fossil, named Cricosaurus bambergensis, features distinguishing characteristics in its jaws and tail, aiding greater understanding of the metriorhynchid family.
Fossils found in North Dakota's Tanis site reveal creatures killed suddenly by the Chicxulub impact's aftereffects, with some fish inhaling tiny spherules ejected from the impact. The rapid 'bloody nose' effect caused devastation worldwide before other aftermath could reach affected areas.
Researchers have discovered that Dickinsonia fossils do not reveal all the features of the earliest known animals. The study suggests that simple physical properties of sediments can explain the preservation of these soft-bodied creatures.
Researchers have uncovered three new species and subspecies of ancient mammals that once roamed the Cayman Islands. These mammals, including large rodents and a shrew-like creature, are believed to have gone extinct due to human arrival and introduced species.
Researchers have discovered fossilized spider eyes with a reflective tapetum, enabling the ancient spiders to hunt at night. The unique preservation of these features in Korean shale has provided valuable insights into the biology and diversity of extinct spider families.
A study by Otago researcher Dr Carolina Loch and colleagues has shed new light on the evolution of modern baleen whales' ancestors, revealing complex enamel structures in their teeth. The research suggests that these ancestral whales had a mix of mammalian and whale-like characteristics.
A 180-million-year-old ichthyosaur fossil has yielded surprisingly well-preserved soft tissues, including skin that retains some of its original pliability. The study reveals the presence of blubber under the skin, similar to modern whales and sea turtles.
A new paper describes two fossil species of marsupials that lived on an island in the Pontide region of modern-day north-central Turkey during the Eocene. The study sheds light on how island ecosystems evolved over time, revealing that even unique biotas are doomed to extinction given enough time.
A 11.6-million-year-old fossil discovered in Can Mata landfill, Spain, has provided new insights into the origin and evolution of flying squirrels. The fossil, identified as Miopetaurista neogrivensis, suggests that giant flying squirrels existed even earlier than previously thought.
A new study led by Harvard University researchers finds that mammal spines have gained new regions during evolution, which enabled them to adapt to different environments. The research challenges the long-held idea that mammal-specific characteristics emerged from a single ancestral blueprint.
Scientists have discovered molecules of fat in an ancient fossil, confirming that animals existed on Earth 558 million years ago. The discovery of the strange creature Dickinsonia, which grew up to 1.4 meters in length, reveals a long-standing mystery about its true identity.
Scientists discovered that mammals' flexible shoulders played a crucial role in the evolution of their complex backbones. The study found that changes in shoulder structure occurred around 270 million years ago, leading to the development of different spine regions and ultimately contributing to mammal diversification.
Researchers have identified biomarkers in Dickinsonia fossils, confirming it as an early animal and challenging previous interpretations. The findings suggest complex organisms emerged over 542 million years ago, paving the way for the Cambrian explosion of life.
Researchers have found that ancient Ediacaran fossils, dating back to 570 million years ago, were part of complex ecological communities. These organisms, such as suspension feeders and filter feeders, competed for resources like modern animals.
Scientists have discovered a new species of lobopodian, an ancient relative of modern-day velvet worms, in 430 million-year-old Silurian rocks. The creature was fully three-dimensionally preserved and reconstructed using digital technology.
Researchers analyzed over 4,000 mosasaur fossil specimens to determine if quality impacts our understanding of past biodiversity. The study found that the rich fossil record provides an accurate picture of mosasaur diversity and evolutionary history despite variable completeness.
A nearly complete foot from Dikika, Ethiopia, exhibits ape-like foot characteristics that challenge the long-held assumption of bipedalism in A. afarensis. The discovery provides new insights into the evolution of bipedality and highlights the importance of juvenile specimens in understanding trait development.
Researchers at Case Western Reserve University and other universities have discovered two new species of extinct hoofed mammals known as litopterns from a site in Bolivia. The animals, dating back to the late Miocene epoch, provide insights into South America's rich diversity of living mammals.
Scientists have uncovered a new species of chancelloriid, an ancient group of spiny tube-shaped animals that lived during the Cambrian Period. The discovery provides fresh insights into the evolution of early animals, with the fossil resembling modern sponges in pattern of body growth.
Two new Ediacaran era fossil animals, Obamus coronatus and Attenborites janeae, have been discovered by a UC Riverside-led team. These soft-bodied creatures represent the dawn of animal life and were named after President Barack Obama and Sir David Attenborough, respectively.
Scientists have discovered a 99-million-year-old featherwing beetle preserved in amber, named 'Jason'. The beetle has been found to have unique features not seen in modern featherwings, but also shares many similarities with its living relatives.
The discovery of ancient tetrapod fossils in South Africa suggests that four-limbed animals evolved in environments beyond tropical regions. The presence of these animals near the poles raises questions about the role of high-latitude environments in their evolutionary transition.
Researchers discovered fossil footprints for animal appendages in the Ediacaran Period in South China, revealing evidence of early animal life. The trackways indicate that bilaterian animals with paired appendages existed during this period, raising questions about their evolutionary origins.
A newly discovered 180-million-year-old Jurassic fossil has identified a missing link between two distinct families of prehistoric crocodiles. The Magyarosuchus fitosi specimen, featuring a large portion of its backbone, suggests that it is an intermediate form between the armoured and unarmoured groups.
Scientists have quantified sea temperatures in ancient oceans using fossil data and climate models. The research reveals high-latitude seas were around 20-25°C, similar to recent greenhouse climates.
A fossilized monitor lizard from the Cretaceous period was found to have a fourth eye-like structure, consisting of both pineal and parapineal organs. This discovery confirms that the third eye in lizards evolved independently of other vertebrate groups.
A new insect fossil discovery highlights a striking resemblance between Canadian and Russian fossils from the same age period, further solidifying an ancient connection between the two regions. The similarity is remarkable, with only the wing color distinguishing the two species, Eomerope eonearctica and Eomerope asiatica.
Researchers followed decomposing carcasses to better understand fossil formation, revealing incomplete remains and distorted life histories. This study helps create accurate pictures of ancient animals and ecosystems.
A new study describes a 5.5-million-year-old fossil turtle species from eastern Tennessee, revealing important differences between this species and others. The discovery provides insight into the evolution of turtles, suggesting that many ancient slider species died out without leaving direct descendants.
Researchers at Yale University have discovered a mineral signature that enables them to predict the presence of rare, soft-tissue preserving fossils. The study found that rocks rich in berthierine are more likely to contain Burgess Shale-type fossils.
Scientists have found that rocks rich in the mineral berthierine, a toxic to decay bacteria, are more likely to preserve soft tissue fossils. This discovery provides a mineralogical signature to find exceptional fossils and potentially supports the search for life on other planets.
A team of Uppsala researchers discovered a wealth of previously unknown microscopic animal fossils in Greenland rocks, dating back over half a billion years. The finds reveal a diverse array of soft-bodied organisms that likely made up the majority of ancient ecosystems.
A newly discovered fossil, Jablonskipora kidwellae, fills the missing evolutionary link in the history of bryozoans. The tiny marine creature lived 105 million years ago and evolved a unique structure to tap into flowing water, giving it a competitive advantage over other species.
A new species of stalked filter feeder has been discovered in the Cambrian Spence Shale in Utah, dating back 500 million years. The ancient creature, named Siphusauctum lloydguntheri, features a unique tulip-shaped body and variations in its digestive tract compared to similar known species.
A 35-million-year-old salamander fossil from France has yielded a unique glimpse into the life of an ancient creature. Researchers have successfully imaged the internal anatomy of the specimen using advanced x-ray imaging techniques, revealing that it fed on frogs - a rare food source for salamanders.