Discovery of Stalicoolithidae in Shanggao County, Jiangxi Province, China
Received date: 2021-07-27
Online published: 2021-12-22
Here we describe a partially-preserved dinosaur clutch with twelve nearly complete eggs discovered in Shanggao County, Jiangxi Province that can be assigned to Coralloidoolithus shizuiwanensis. These dinosaur eggs are nearly spheroid in shape, with an average polar axis of 11.8 cm and an average equatorial diameter of 9.8 cm. The eggshell has a maximum thickness of about 2.5 mm and is composed of a thin cone layer and a multilevel columnar layer, the latter of which can be divided into inner, medial and outer zones. There are dense horizontal growth lines in the inner zone, lamellar and speckled dark materials in the medial zone, and the secondary eggshell units are distributed in the medial and outer zones. According to this discovery, we revise the main taxonomic characteristic of Coralloidoolithus in the Stalicoolithidae to be the loose and dark materials in the medial zone of the columnar layer. This discovery not only extends the paleogeographic distribution of Coralloidoolithus shizuiwanensis, but also provides comparative evidence of the Late Cretaceous strata in the Shanggao red basin.
Key words： Shanggao County; Jiangxi Province; Late Cretaceous; dinosaur eggs; Stalicoolithidae
FANG Kai-Yong, LIU Qing-Hua, WANG Qiang, ZHU Xu-Feng, DENG Li, LIU Yu-Chun, WEN Jun, WANG Xiao-Lin . Discovery of Stalicoolithidae in Shanggao County, Jiangxi Province, China[J]. Vertebrata Palasiatica, 2022 , 60(1) : 69 -78 . DOI: 10.19615/j.cnki.2096-9899.211222
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