Physiology of dinosaurs and that this was a feature they shared with birds. In 2007 Oliver Wings reviewed references to gastroliths in scientific literature and found considerable confusion, starting with the lack of an agreed and objective definition of "gastrolith". He found that swallowed hard stones or grit can assist digestion in birds that mainly feed on grain but may not be essential—and that birds that eat insects in summer and grain in winter usually get rid of the stones and grit in summer. Gastroliths have often been described as important for sauropod dinosaurs, whose diet of vegetation required very thorough digestion, but
Given name Peyton came into the top 1000 as a female given name for babies in the United States for the first time in 1992 (at #583), immediately after it was featured as the name of an evil nanny in the film "The Hand That Rocks the Cradle". On the other hand, historical events can influence child-naming. For example, the given name Adolf has fallen out of use since the end of World War II in 1945. In contrast with these anecdotal evidence, a comprehensive study of Norwegian first name datasets shows that the main factors that govern first name dynamics are