Credit: PixabayUniversity of Oregon researchers have discovered a sex chromosome in the California two-spot octopus that likely dates back 480 million years—long before octopuses and nautiluses diverged. This makes it one of the oldest known animal sex chromosomes.The finding confirms that octopuses and other cephalopods, including squid and nautiluses, use chromosomes to determine sex,...
Credit: PixabayAncient fossils of the world's very first dinosaurs may be buried in places almost impossible to investigate, according to new research from University College London and the UK's Natural History Museum.Oldest Dinosaur Fossils and Their Evolutionary SignificanceThe oldest dinosaur fossils currently on record date back around 230 million years. These specimens, recovered from...
Credit: WOODRUFF ET AL. (2022); CORBIN RAINBOLTPeculiar growths on dinosaur neckbones hint at old infectionIt takes much force to cough a loogie up a nearly 4-meter-long neck, but that is what one dinosaur had to do. The Guardian reports that paleontologists have discovered unusual nodules on the neck of a 150-million-year-old sauropod, proof of the...
