古脊椎动物学报2022，Vol.60Issue(1)：59-68,10.DOI:10.19615/j.cnki.2096-9899.211021
山东莱阳厚皮圆形蛋碎蛋壳的修订
A revision of the eggshell fragment of Spheroolithus megadermus from Laiyang,Shandong Province,China
摘要
Abstract
In 1958,a special type of dinosaur egg was discovered in Zhaotuan,Laiyang,Shandong Province,China.Although only a large eggshell fragment was collected,its extremely large thickness indicated that the eggshell fragment represented a new ootaxon.In previous studies,it was named Spheroolithus megadermus and assigned to the oogenus Spheroolithus under the oofamily of the Spheroolithidae based on the microstructure in radial view.However,a comparative study of the microstructure in tangential views between the large eggshell fragment from Laiyang and the recently reported Multifissoolithus from Zhejiang Province,China and Yamaguchi,Japan revealed that all of them have roughly paralleled and wavy clefts.Therefore,this study reassigned the large eggshell fragment from Laiyang to Multifissoolithus of the Dongyangoolithidae and discussed its unique compact layer near the eggshell's inner surface,as well as the chronological and spatial distribution of dongyangoolithid eggs.The reassignment of the holotype of Spheroolithus megadermus also indicates that the referred specimen of Spheroolithus megadermus from Changtu,Liaoning Province becomes the holotype of a new oospecies Spheroolithus quantouensis.关键词
山东莱阳/圆形蛋属/多裂隙蛋属/东阳蛋类Key words
Laiyang,Shandong/Spheroolithus/Multifissoolithus/dongyangoolithid eggs分类
生物科学引用本文复制引用
张蜀康..山东莱阳厚皮圆形蛋碎蛋壳的修订[J].古脊椎动物学报,2022,60(1):59-68,10.基金项目
国家自然科学基金(批准号:42072008,41972021)资助.The author sincerely expresses gratitude to Prof.Zhao Zi-Kui (IVPP) for the constructive comments and feedback given to improve the manuscript,and Gao Wei (IVPP)for documenting the excellent images.This study is supported by grants from the National Natural Science Foundation of China (No.42072008,41972021). （批准号:42072008,41972021）
