A new oospecies of parafaveoloolithids from the Pingxiang Basin, Jiangxi Province of China
A new oospecies of parafaveoloolithids from the Pingxiang Basin, Jiangxi Province of China
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发表时间：
2013
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通讯作者：
Z. Song
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作者：
Z. Song
自2002年以来，在江西萍乡盆地发现了晚白垩世恐龙蛋群、单个蛋和无数蛋壳碎片。本文所描述的萍乡盆地的标本为扁圆形。该卵的极轴为7.32厘米，赤道直径为13.81厘米，形状指数为189。外表面光滑。蛋壳通常由三个或五个叠加的细长壳单元组成。在某些部分中，6-10个壳单元组装在蛋壳的中部和上部。气孔直而不分枝，数量极多，间隔紧密，整体看起来像一个蜂窝，切面穿过蛋壳的中部。与卵窝石科的成员相比，这里描述的标本应该归因于卵发生器Parafaveololithus的基础上，一些壳单元倾向于组装在蛋壳的中部和上部。但与已知卵种Parafaveolololithus microporus、P. macroporus、P. tansicunensis和P. guoqingsiensis的差异较大，后者的蛋壳通常有2 ~ 3个壳单元，倾向于聚集在蛋壳的中部。因此，本文描述的标本代表一个新卵种，Parafaveolololithus pingxiangensis oosp。Nov.
Upper Cretaceous dinosaur egg clutches, single eggs, and countless eggshell fragments have been found in the Pingxiang Basin, Jiangxi Province since 2002. In this paper, the specimens described from the Pingxiang Basin are oblate in shape. The polar axis of this egg is 7.32 cm, the equatorial diameter is 13.81 cm, and its shape index is 189. Outer surface is smooth. Eggshell is usually composed of three or five superimposed slender shell units. In some portions, 6-10 shell units are assembled in the middle and upper part of the eggshell. Pores are straight and unbranching, extremely numerous, and closely spaced, looking as a whole like a honeycomb in tangential section through the middle part of the eggshell. Compared to the members of faveoloolithids, the specimens described here should be ascribed to the oogenus Parafaveoloolithus on the basis of some shell units tending to assemble in the middle and upper part of the eggshell. However, the difference is remarkable between the new specimen and the known oospecies, Parafaveoloolithus microporus, P. macroporus, P. tiansicunensis and P. guoqingsiensis, of which the eggshell has usually two or three shell units tending to assemble in the middle part of the eggshell. Therefore, the specimens described here represent a new oospecies, Parafaveoloolithus pingxiangensis oosp. nov.