Abstract
Here we describe new types of dinosaur eggs found from the Late Cretaceous Chichengshan Formation in the Tiantai Basin, Zhejiang Province. On the basis of such characters as small spheroid or near-spheroid, columnar layer composed of three zones, the outer zone consisted of stalagmite-like or coralliform secondary shell units, we established two new oogenera, one new and one combination oospecies: Stalicoolithus shifengensis oogen. et oosp. nov. and Coralloidoolithus shizuiwanensis oogen. et comb. nov. In addition, re-examination of the holotype of Shixingoolithus erbeni from the Upper Cretaceous Pingling Formation, Guangdong Province reveals that it was erroneously attributed to Spheroolithidae, and should be transferred to stalicoolithid. Consequently, we established a new oofamily: Stalicoolithidae oofam. nov. Stalicoolthids represents a new model of dinosaur eggshell and thus sheds new light on the formation and evolution of amniotic eggshells.
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Wang, Q., Wang, X., Zhao, Z. et al. A new oofamily of dinosaur egg from the Upper Cretaceous of Tiantai Basin, Zhejiang Province, and its mechanism of eggshell formation. Chin. Sci. Bull. 57, 3740–3747 (2012). https://doi.org/10.1007/s11434-012-5353-2
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DOI: https://doi.org/10.1007/s11434-012-5353-2