Scientists are using used fossilized feces and vomit from Poland to reconstruct how dinosaurs came to dominate the Earth. The new study reconstructs who was eating whom 200 million years ago and suggests that dinosaurs ascended to prominence in a series of steps over 30 million years.
This illustration provided by Marcin Ambrozik shows plant-eating dinosaurs in Poland during the Early Jurassic period. This undated photo provided by Grzegorz Niedzwiedzki shows fossilized plant-eating dinosaur poop found in the Holy Cross Mountains, Poland . This undated photo provided by Grzegorz Niedzwiedzki shows fossilized plant-eating dinosaur poop found in Soltykow, Poland .
When climate conditions changed, they were quick to adapt. Plant-eating dinosaurs, for example, ate a greater variety of greens than other vegetarians of the time, so it was easier to expand their palates when wetter conditions gave rise to new plant species.
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