A new study on the rise of dinosaurs analyzed coprolites, or fossilized feces, from the early Jurassic Period in Poland. CNN
New research on dinosaur fossils has uncovered some fascinating insights into how dinosaurs became Earth's dominant species. While early dinosaurs were small and not very remarkable, within 30 million years, they ruled the planet, overtaking other reptiles. Understanding exactly why they became so successful has long been a mystery, but scientists are now finding answers in an unusual source: dinosaur poop.
The study, led by Martin Qvarnström, a paleontologist at Uppsala University in Sweden, focused on fossils of dinosaur droppings and vomit, known as bromalites. By studying over 500 fossils from the Polish Basin, which spanned from 247 to 200 million years ago, researchers have gained valuable insight into the rise of these ancient giants. Qvarnström noted, “We know a lot about their lives and extinction but not how they came about.”
The research found that these fossilized remains of dinosaur waste, often dismissed by paleontologists in the past, hold a wealth of information. The team’s study showed that the size and variety of fossilized poop increased over time, revealing a growing diversity of diets and animal sizes. By linking these droppings to other fossils, such as bones and footprints, the researchers were able to map out the types of animals that lived alongside dinosaurs and determine when dinosaurs began to thrive.
Research on fossilized poop has provided valuable insights into how dinosaurs became dominant around 200 million years ago. CNN
One of the most significant discoveries was that larger dinosaurs and more varied diets emerged during this time. Studying the poop gave the researchers a clearer picture of how the landscape looked over time and helped explain why dinosaurs became so successful. “(Bromalites) contain so much paleoecological information, but I don’t think paleontologists really have acknowledged that,” Qvarnström said.
The team used advanced scanning technology, including 3D scans at a facility in France, to study the internal structure of the fossils. This allowed them to identify contents such as bones, insects, plants, and even small fish. These findings gave researchers clues about the diets of various dinosaur species, such as carnivores that ate fish or herbivores that consumed a variety of plants. One surprising discovery was that some herbivorous dinosaurs consumed charcoal, likely to detoxify the toxic plants they ate.
These footprints, found at a fossil site in Sołtyków, Poland, belonged to a large theropod dinosaur. CNN
As the team analyzed these findings, they developed a clearer picture of how dinosaurs rose to dominance. The rise of herbivorous dinosaurs led to the appearance of massive carnivores, which made their mark at the start of the Jurassic period. By studying these fossils, the scientists were able to trace five key phases in the dinosaurs' evolution, from omnivorous ancestors to the mighty carnivores and herbivores that ruled the Earth.
While previous theories suggested that dinosaurs either evolved superior physical abilities or adapted to climate changes, the new research indicates that it was likely a combination of both factors. Dinosaurs were more agile and better at coping with environmental changes, making them better equipped to compete for food resources. The findings from the study suggest that, much like today, the dinosaurs’ ability to eat a varied diet helped them thrive, with Qvarnström humorously noting that the lesson for today’s animals is clear: “Eat your veggies and live longer.”
