Dinosaur teeth reveal some picky eaters.

The article discusses a study revealing that some herbivorous dinosaurs were selective eaters, preferring specific parts of plants rather than consuming whatever was available. Researchers analyzed calcium isotopes in fossilized teeth from dinosaurs, finding that the diet of these animals was influenced more by the nutritional value and texture of their food than by their size. For instance, the sauropod Camarasaurus primarily consumed woody plants, while the smaller Camptosaurus favored softer plant parts like leaves. The study also examined carnivorous dinosaurs, indicating that Eutretauranosuchus mainly ate fish, while Allosaurus primarily consumed other dinosaurs. This research, conducted at the Carnegie Quarry in Utah, establishes the measurement of calcium isotopes in dinosaur teeth as a valid scientific method for understanding their diets. [Extracted from the article]