The species in question was a therapsid, a group of animals that was the forefather to modern-day mammals, including humans.
Modern Nautilus and Allonautilus species inhabit deeper waters than their extinct ancestors did over 500 million years ago.
The world's oldest octopus fossil is no longer an octopus. A new study by researchers says the 300-million-year-old creature ...
Skeleton season may be just around the corner, but the skeleton age dawned with the early Cambrian Period, about 538 million to 506 million years ago. Subscribe to our newsletter for the latest ...