Summary:

- The article discusses the discovery of fossilized dinosaur feces, known as coprolites, that provide insights into how dinosaurs came to dominate the Earth during the Mesozoic era.
- The coprolites reveal that early dinosaurs were able to extract more nutrients from their food compared to their contemporaries, giving them a competitive advantage and allowing them to grow larger and become the dominant land animals.
- The findings suggest that the ability to extract more energy from their diet was a key factor in the rise of dinosaurs and their eventual dominance over other prehistoric creatures.