Trace fossils reveal clues to evolution of tiny organisms in deep marine ecosystems
Dr. Luis Buatois (Ph.D.) traces a series of hexagons with his finger, following the path carved by tiny organisms millions of ...
Northcountrypublicradio.org14d
66 million years ago, a fish chewed up and spit out food. It's now a fossil in Denmark
The fossil was found at a cliff in Denmark. Fossilized vomit is called regurgitalite, and it's a type of trace fossil, which tells scientists... About 66 million years ago, just before the mass ...