Herbivore or carnivore? A new toolbox for the study of extinct reptiles

Evolution has resulted in the development of both herbivores and carnivores—but how? What type of food did extinct vertebrates eat? And how can we gain insight into the diets of these creatures? In living animals, we can simply observe what they feed on today. In the case of extinct species, however, researchers rely on morphological or chemical information supplied by fossils.