Exquisitely preserved embryo found inside fossilized dinosaur egg
A 72- to 66-million-year-old embryo found inside a fossilized dinosaur egg sheds new light on the link between the behavior of modern birds and dinosaurs, according to a new study......»»
Using topology, researchers advance understanding of how cells organize themselves
The fact that humans and other living organisms can develop and grow from a single cell relies on a process called embryonic development. For healthy tissue to form, cells in the embryo have to organize themselves in the right way in the right place.....»»
Pollen in pee: Fossilized urine from a small African mammal helps with understanding past environments
If you are allergic to pollen, you are likely to curse the existence of these microscopic particles. You're not alone: up to 30% of the world's population suffers from hay fever, which is often driven by pollen allergies. Shifting global climates are.....»»
Isle of Wight fossil suggests Europe had its own family of small herbivorous dinosaurs
Scientists have discovered a new species of small plant-eating dinosaur on the Isle of Wight in southern England (UK). The new species, Vectidromeus insularis, is the second member of the hypsilophodont family to be found on the island, suggesting th.....»»
Nature"s great survivors: Flowering plants survived the mass extinction that killed the dinosaurs
A new study published in Biology Letters by researchers from the University of Bath (UK) and Universidad Nacional Autónoma de México (Mexico) shows that flowering plants escaped relatively unscathed from the mass extinction that killed the dinosaur.....»»
Billion-light-year-wide "bubble of galaxies" discovered
Astronomers have discovered the first "bubble of galaxies," an almost unimaginably huge cosmic structure thought to be a fossilized remnant from just after the Big Bang sitting in our galactic backyard......»»
The internet just learned how the dinosaurs went extinct
Apparently, the internet thought the asteroid obliterated every dinosaur on impact — like they all happened to be having a meeting in that exact spot. The online jokes have been great. The internet got to talking about dinosaurs and, frankly,.....»»
New research on fruit flies provides key insights into the nutrients essential for embryo development
It is well known in development biology that a mother's egg provides abundant nutrients that are essential for an embryo to develop. But does it matter where in the developing embryo the nutrients are stored?.....»»
This sure looks like the movements of a glacier across ancient Mars
It is a scientific certainty that Mars was once a much different place, with a denser atmosphere, warmer temperatures, and where water once flowed. Evidence of this past is preserved in countless surface features, ranging from river channels and allu.....»»
Researchers find fossilized nonflying precursor to pterosaur in Brazil
A team of paleontologists from Brazil, Argentina and the U.S., has found the fossilized remains of a creature they describe as a precursor to the pterosaur at a dig site in Rio Grande do Sul, Brazil. In their paper published in the journal Nature, th.....»»
With in vitro model advances, group proposes refined legal definition of an embryo
Thanks to continuous advances in human stem cell research, studies that make use of embryo models are progressing quickly. This research offers both a scientific and ethical alternative to the use of embryos resulting from fertilized human eggs, and.....»»
Scientists explore dinosaur "coliseum" in Denali National Park
University of Alaska Fairbanks scientists have discovered and documented the largest known single dinosaur track site in Alaska. The site, located in Denali National Park and Preserve, has been dubbed "The Coliseum" by researchers......»»
Researchers identify peptides for pollen tube growth in rice
Double fertilization is a complex mechanism in flowering plants, wherein two sperm cells fuse with the embryo sac. To achieve this, pollens released from anthers must interact with the plant's stigma, hydrate, and germinate into pollen tubes. Thus, p.....»»
Evolutionary forces shape the human skeleton
Genetic kinship analyses of human bones reach their limits if the DNA is poorly preserved or if destructive sampling is not possible. New research shows that in such cases, comparisons of the structure and shape of certain parts of the skeleton may a.....»»
Fossilized feces found to be infested with parasites from more than 200 million years ago
Fossilized feces preserve evidence of ancient parasites that infected an aquatic predator over 200 million years ago, according to a study published August 9, 2023, in the open-access journal PLOS ONE by Thanit Nonsrirach of Mahasarakham University,.....»»
Dinosaur track site in Lesotho: How a wrong turn led to an exciting find
I am a poor navigator. This is not an easy thing for a field geologist to admit. We need to be able to find our planned area of interest in good time and make our way back to our potentially hidden and distant vehicles at the end of the day. It's esp.....»»
Bizarre-Looking Colossus Whale May Have Been Heaviest Animal Ever (Sorry, Blue Whales)
“I’ve never seen anything like it,” says a paleontologist not involved in the discovery of a 40-million-year-old fossilized whale.....»»
Ichnocoenoses reveal dynamic process of turbidity current–induced benthic-marine oxygenation
Trace fossils are fossilized structures produced on or within a substrate by the life processes of ancient organisms, including tracks, trails, burrows, borings, and other structures. Ichnocoenosis, a suite of trace fossils representing the work of a.....»»
Perfectly preserved turtle fossil gives clues to habitat 150 million years ago
A perfectly preserved turtle fossil from Lower Bavaria yields important clues about both the species and the habitat that existed in southern Germany 150 million years ago. The fossil is the best-preserved specimen of Solnhofia parsonsi found to date.....»»
New archosaur species shows that precursor of dinosaurs and pterosaurs was armored
Researchers have described a new species of armored reptile that lived near the time of the first appearance of dinosaurs. With bony plates on its backbone, this archosaur fossil reveals that armor was a boomerang trait in the story of dinosaur and p.....»»
Discovery of new ornithopod solves mystery of unidentified large dinosaur tracks
Researchers at the Fundación Conjunto Paleontológico de Teruel-Dinópolis/ Museo Aragonés de Paleontología, Spain, have released the description of a new upper Jurassic dinosaur based on fossil remains found in Spain......»»