A Moment of Science

Fossilized Poop

The topic of Today's Moment of Science is fossilized fecal matter. You heard me. Fecal matter, feces, poop, whichever you prefer.

The topic of Today’s Moment of Science is fossilized fecal matter. You heard me. Fecal matter, feces, poop, whichever you prefer.

One would think it would be fairly hard for feces to fossilize considering its many other possible fates. It can be eaten by another animal, digested by microbes, washed or blown away, not to mention a number of other possibilities. But if the animal who left the feces was a carnivore, the good news is that its feces probably contains bone material which contains calcium and phosphate.

Together they make up a compound important for fossilization. That is, calcium phosphate is largely responsible for turning soft feces into a hard fossil. And considering how often an animal has to go in its lifetime versus how many times it dies, studying fossilized feces isn’t a bad idea.

Fossilized feces, also known as coprolites, can show us a lot about the lifestyles of the animals that left them behind. From them, we can decipher what those animals ate, as well as information about their habitats. The real difficulty in studying coprolites is identifying who deposited them. And in case you were wondering, some dinosaurs have left behind some awfully large specimens, measuring as much as two and half liters in volume and as much as sixteen inches in diameter.

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