Measuring just 200 by 400 microns (about 10 times the width of a human hair on its widest dimension), one would think finding an ancient zircon to be harder than finding a needle in the proverbial haystack…Or, in this case, like finding a nearly microscopic gemstone on a sheep farm in Western Australia. But geologists treasure
A team of geoscientists working on a separate geological project in South Australia accidentally stumbled upon the oldest evidence of animal life yet found. Previously, the oldest fossil evidence of non-unicellular, “hard bodied” life forms dates to about 550 million years ago. This new discovery pushes back the clock on animal life by 80 to 90 million years.