A fossil species of baleen whales sheds new light on the transition from ancient toothed whales to modern baleen whales.
A new fossil species suggests that great apes, including humans, evolved differently from smaller "lesser" apes than researchers previously surmised.
Ancient birds had an intricate arrangement of muscles and ligaments that controlled the main feathers of their wings. This suggests that some were able to fly as well as modern birds.
A new study confirms that a well-preserved fetus and soft tissues were found in 48-million-year-old fossils of a small horse-like species.
When an asteroid impacted Earth 66 million years ago, many species, including dinosaurs, faced extinction. But a furry beaver-like species actually survived and became top dog in the newly available environment.