This is the dorsal vertebrae of an edmontosaurus.

这是埃德蒙顿龙的背椎。

For Spinosaurus and Ouranosaurus we might a character called length of the dorsal vertebra neural spine.

对于棘龙和 Ouranosaurus，我们可能会使用一个称为背椎神经脊柱长度的字符。