George Poinar, Jr., Oregon State University

First mammalian red blood cells found preserved in amber

It’s no dino DNA or Jurassic Park, but scientists have now discovered the first fossilized mammalian red blood cells encased in a piece of amber that they estimate is about 15 million to 30 million years old. According to Live Science, the researchers suggest the blood cells came from a monkey, because two holes on the back of the tick suggest it was removed from its host midfeeding, after which it became trapped in the sap. And like a Russian matryoshka doll, those blood cells yielded yet another prehistoric treasure, a species of blood parasite that still infects humans today