hypocercal
基本解釋
- 反歪尾的
英漢例句
- hypocercal fin
反歪尾鰭 - hypocercal Caudal fin shape in which the lower lobe is larger and often more posteriorly directed than the upper lobe. Asymmetrical externally as well as internally, e.g. Pteraspides (fossil).
下葉長(zhǎng)尾形尾鰭形狀在下麪的葉是較大的，與時(shí)常較上葉更曏後突出。不對(duì)稱(chēng)在外部以及內(nèi)部，例如鰭甲魚(yú)綱(化石)。