title: New turtle egg fossil from the Upper Cretaceous of the Laiyang Basin, Shandong Province, China.
abstract: A new type of turtle egg fossil was established: Emydoolithus laiyangensis oogen. et oosp. nov.. Based on its elliptical morphological shape, rigid eggshells, and eggshell characteristics, it is different from other types of round chelonian egg fossils. It is the second chelonian egg fossil found in Cretaceous in China. This discovery shows the Laiyang ecosystem in Late Cretaceous is more diversified than previously thought.
authors.affiliation: Key Laboratory of Vertebrate Evolution and Human Origin of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wang
authors.forename: Xiaolin
authors.initials: X
authors.lastname: Wang
authors.forename: Zikui
authors.initials: Z
authors.lastname: Zhao
authors.forename: Jialiang
authors.initials: J
authors.lastname: Zhang
authors.forename: Shunxing
authors.initials: S
authors.lastname: Jiang
mesh_terms: D000818:Animals; D002681:China; D005580:Fossils; D010063:Ovum; D014426:Turtles