supported by the Knowledge Innovation Program of the Chinese Academy of Sciences(KZCX2-YW-120);the Key Laboratory of Evolutionary Systematics of Vertebrates,Chinese Academy of Sciences(2010LESV007)
Some Miocene ratite eggshell fragments from Gashunyinadege (about 17.5 Ma) and Baogedawula (7.11 ± 0.48 Ma), Inner Mongolia, China, are described. The outer surfaces of eggshell fragments from Gashunyinadege are smoo...