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
Nana (given name) Nana (given name) Nana is a given name that has different origins in several countries across the world. Its use as a feminine or masculine name varies culturally. It is feminine in Japan, Korea, Georgia and Greece, and it is masculine in Ethiopia and India, and epicene in Ghana and Indonesia. In Georgia, Nana is the fifth most popular given name for girls. In Ghana, among the Akan people, particularly the Akyem, Ashanti and Akuapim peoples, Nana is used as the title of a monarch to signify their status. Furthermore, the stool name of kings and queens is always preceded