| 单词 |
preheterocercal |
| 释义 |
preheterocercal, a. Ichth.|priːhɛtərəʊˈsɜːkəl| [pre- B. 1.] Preceding the heterocercal: a supposed stage in the development of the tail in fishes.
1900Nature 20 Sept. 506/1 The supposition that it represents the original ‘protocercal’ or preheterocercal stage. |

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