Duovallumoolithus shangdaneneis oogen. et oosp. nov.Â
ZHENG Tingting,BAI Yi,WANG Qiang,ZHU Xufeng,FANG Kaiyong,YAO Yuan,ZHAO Yongqiang &WANG Xiaolin (2018)
A New Ootype of Dinosaur Egg (Faveoloolithidae: Duovallumoolithus shangdanensis oogen. et oosp. nov.) from the Late Cretaceous in the Shangdan Basin, Shaanxi Province, China.ÂÂ
Acta Geologica Sinica 92(3): 897-903 (English edition)
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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 preferable 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 shangdaneneis oogen. et oosp. nov. The new discovery expands the diversity of Faveoloolithidae.
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