The pterosaurian egg doesn′t show any structures of the hard shell, indicating that it may be soft-shelled too.

翼龙类蛋化石没有显示硬壳结构，很可能同样为软壳蛋。

youdao

The pterosaurian egg doesn′t show any structures of the hard shell, indicating that it may be soft-shelled too.

翼龙类蛋化石没有显示硬壳结构，很可能同样为软壳蛋。

youdao