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
Oliver (given name) "Oilibhéir", Scottish Gaelic "Oilvreis", Italian "Oliviero", Spanish "Óliver". The name was introduced to England by the Normans. It was commonly used in medieval England, but became rare after the Restoration, because of the unpopularity of Oliver Cromwell. The name was revived in the 19th century, possibly inspired by the title character of Dickens' "Oliver Twist" (1838). Pet forms of the English given name include "Ollie" and "Noll". In 2013 it was the fifth most popular name for boys in Australia. Oliver (given name) Oliver is a masculine given name of Old French origin; "Oliver" is one of Charlemagne's retainers in