An unpaired, median, often dagger-shaped dermal bone on the undersurface of the cranium in many vertebrates.
| 单词 | θ30823 |
| 释义 | the world > animals > animal body > general parts > constituent materials > [noun] > bone at base of skull (1) parasphenoid1868 An unpaired, median, often dagger-shaped dermal bone on the undersurface of the cranium in many vertebrates. |
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