A New Ootype of Dinosaur Egg (Faveoloolithidae: Duovallumoolithus shangdanensis oogen. et oosp. nov.) from the Late Cretaceous in the Shangdan Basin,Shaanxi Province,China |
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| Authors: | ZHENG Tingting BAI Yi WANG Qiang ZHU Xufeng FANG Kaiyong YAO Yuan ZHAO Yongqiang and WANG Xiaolin |
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| Institution: | 1. Shaanxi Nature Museum, China;2. Key Laboratory of Vertebrate Evolution and Human Origin of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, China;3. CAS Center for Excellence in Life and Paleoenvironment, China;4. University of Chinese Academy of Sciences, China;5. China University of Geosciences, School of Earth Sciences and Resources, China |
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| Abstract: | A new ootype collected from the Upper Cretaceous Lijiacun Formation in the Shangdan Basin, Shaanxi Province is described in this paper. Based on general external shape, size, eggshell thickness and honeycomb‐like eggshell microstructure, eggs are referable to the oofamily Faveoloolithidae. Compared with other members of Faveoloolithidae, specimens described in this paper show special characteristics: adjacent pores are usually separated by two eggshell units between which often develop interspaces; columnar eggshell units are relatively closely arranged in radial view. According to these characteristics, we erect a new oogenus and a new oospecies: Duovallumoolithus shangdanensis oogen. et oosp. nov. The new discovery expands the diversity of Faveoloolithidae. |
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| Keywords: | dinosaur egg Faveoloolithidae Late Cretaceous Shangdan Basin Shaanxi Province China |
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