Geological Survey of Denmark and Greenland / 03:44 / POSTED 05.08.16

DINOFLAGELLATES - SNITCHES FROM THE PAST

They survive the strongest acid. They keep in perfect shape buried deep in the ground for more than 200 million years. And they guide us in the exploration for gas and oil - and ground water too. In other words, the cysts of dinoflagellates are a geologist’s versatile and tough little snitches

http://www.geus.dk/DK/publications/popular-geology/misc/Documents/aktuel-naturvidenskab-5-2006.pdf