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湖南洞庭盆地西部的恐龙蛋化石

1979年 第17卷 第2期: 131~136

发表日期:2009-04-28李志恒来源:放大 缩小

编辑:曾德敏 张金鉴

摘要:The dinosaurian eggs described in this paper were collected from the Red-Beds in western Dongting Basin, Hunan. The following is a list of the fossil eggs in the present article:
    Phacelaolithus humanensis gen. et sp. nov.
    Elongatoolithus magnus sp. nov.
    Elangatoolithus sp.
    The Phaceloolithus hunanensis gen. et sp.nov. may represent a new family Phaceloolithidae.  Its diagenosis may be listed as follows:
    1.  The outer view is nearly subspherical. Their long and equatorial diameters are 167-168 mm and 140-150 mm respectively.
    2.  The eggshell is rather thin, between 0.5-0.7 mm in thickness. The structure of the eggshell is composed of mammillary layer and stratified prismatic one. Mammillae are, in general, compressed by twos and threes in a single stratum. The pore canals in stratified prismatic layer are well-developed.
Based on assemblages of the fossil eggs and its associated fossil (Ostracoda, Charophyta) the age of fossil eggs bearing beds is estimated as late age to late Cretaceous.

卷期:17卷 02期

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