Researchers studied microfossils from the McArthur and Birrindudu basins in Northern Territory, Australia, dated 1.75–1.4 billion years ago. The fossils occur mainly in oxygenated seafloor sediments, suggesting early eukaryotes needed oxygen and lived on the seafloor.
Photo by masakazu sasaki, Unsplash
Researchers at the University of Missouri found that the all-female Amazon molly keeps its DNA healthy despite cloning. They show gene conversion and genome comparisons help explain how the species avoided extinction and remained diverse.
Researchers used CT scans and engineering simulations on a Thrinaxodon fossil. Their models show a membrane in the jaw could work as an eardrum, pushing the origin of sensitive mammal hearing back by nearly 50 million years.
Researchers found two special neuron types in the retrosplenial cortex that help navigation. These cells are conserved between mice and rats, linked to spatial disorientation in Alzheimer’s, and are now being studied in humans.
