title: Gastroliths in Yanornis: an indication of the earliest radical diet-switching and gizzard plasticity in the lineage leading to living birds?
authors.affiliation: Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, PO Box 643, 100044, Beijing, China. zhou.zhonghe@pa.ivpp.ac.cn
authors.forename: Zhonghe
authors.initials: Z
authors.lastname: Zhou
authors.forename: Julia
authors.initials: J
authors.lastname: Clarke
authors.forename: Fucheng
authors.initials: F
authors.lastname: Zhang
authors.forename: Oliver
authors.initials: O
authors.lastname: Wings
mesh_terms: D000821:Animal Feed; D000818:Animals; D001717:Birds / Q000502:physiology*; D002681:China; D004032:Diet; D005580:Fossils; D005895:Gizzard, Avian / Q000502:physiology*; D013270:Stomach / Q000502:physiology*