In what seems like a step closer to Jurassic Park, combined with some good fortune, a blood-engorged tick trapped in amber 15–45 million years ago has turned out to contain perfectly preserved mammalian blood cells, likely from a monkey. George Poinar Jr of Oregon State University in Corvallis also found numerous single-celled parasites in different parts of their life cycle in the fossil, which comes from the Cordillera Septentrional mountain range of the Dominican Republic. Two small holes on the tick’s back suggest that it was picked off during its meal, perhaps by another monkey, and fell immediately into tree sap. As an added bonus, the amber stained the red blood cells and parasites differently, making each stand out clearly.