Tiny 'Vampires' Put the Bite on Amoeba Prey 740 Million Years Ago

When movie vampires strike, they leave behind telltale marks in the victim's neck — puncture wounds that show where they sank their fangs. Recently, scientists discovered amoeba fossils perforated with circular holes that were likely made by microscopic predatory creatures 740 million years ago. The holes showed where a single-celled predator drilled through its amoeba prey's protective cell wall to consume the material known as cytoplasm that lies inside, according to a new study.