Dinosaur Puke and Poo Reveal Secrets Behind Their Rise to Power
Scientists have made an extraordinary breakthrough in understanding how dinosaurs rose to dominance—by studying their fossilized puke and poo! A new study has provided fascinating insights into the diets of these prehistoric giants, shedding light on how they outcompeted other species and came to rule the ancient world.
“Diet and ecology are important factors shaping the evolution of animals today and in the past,” said Martin Qvarnström, an evolutionary biologist at Uppsala University in Sweden. “Just analyzing bone remains won’t cut it if we want to understand the rise of dinosaurs.”
From the Mid-Triassic to Global Domination
The earliest evidence of dinosaurs dates back to the mid-Triassic period. However, they didn’t take over the planet until the early Jurassic period, about 40 million years later. During this time, dinosaurs gradually displaced other large land animals, but exactly how they did so has long been a mystery.
To uncover more details, researchers analyzed over 500 fossilized remains from the Polish Basin, spanning from the late Triassic to the early Jurassic. However, instead of focusing on bones, they studied fossilized vomit and feces—scientifically known as regurgitalites and coprolites. These remnants offer a treasure trove of information about dinosaur diets, feeding behaviors, physiology, and even parasites. By comparing their diets with those of other creatures from the same era, scientists have been able to track how these prehistoric food webs evolved over time.
A Varied and Adaptable Diet
One of the most exciting findings was the incredible variety of foods found in these fossils. “We have seen everything from tiny beetles to half-complete fish, bones, teeth, and plant remains,” Qvarnström said. This diverse diet was a key factor in dinosaurs’ success.
Grzegorz Niedźwiedzki, a paleontologist at Uppsala University, was particularly surprised by some of the discoveries. “We found a piece of a temnospondyl amphibian skull,” he explained. “No one would have guessed that such massive temnospondyls were attractive to predators. It was honestly easy to break your teeth on such a massive skull.” In another sample, researchers found the bones of a small crocodile—evidence that early dinosaurs were not picky eaters.
How Diet Shaped Dinosaur Evolution

By combining their dietary findings with historical climate and plant data, researchers were able to reconstruct prehistoric food chains and observe how they changed over time. One of the key takeaways from the study was that dinosaurs had a much more adaptable diet than many of their competitors. Their ability to consume a variety of foods allowed them to survive changing environmental conditions while more specialized species struggled.
Plant-eating dinosaurs, in particular, may have benefited from this adaptability. Because they were able to consume a wide range of plant matter, they could grow to massive sizes—paving the way for the evolution of even larger carnivorous dinosaurs. This dietary flexibility gave dinosaurs a competitive edge and played a crucial role in their eventual domination of the planet.
Conclusion
The study of fossilized dinosaur vomit and feces is providing paleontologists with crucial new perspectives on how these creatures adapted and thrived. By revealing the secret diets of dinosaurs, scientists are uncovering the evolutionary advantages that helped them outlast their rivals and become the rulers of the ancient world. This breakthrough is a reminder that sometimes, the most unexpected sources—like puke and poo—can unlock the biggest mysteries of history.