Very important discovery
"Millions of years ago" is often shortened in scientific literature to Mya. Standard SI prefixes then imply the existence of kya (thousands of years ago), mya (thousandths of years ago), μya (millionths of years ago), and nya (billionths of years ago). One billionth of a year is about 0.03 seconds, which implies that if you speed up the iconic nyan cat video by a factor of about ten, each "nya" will be about one nya long.