diphycercal 的定义
Ichthyology.
- having a tail or caudal fin with the spinal column extending horizontally to the end of the tail, characteristic of lungfish, several other primitive fishes, and the juvenile stage of modern bony fishes.
更多diphycercal例句
- In Dipterus there are no marginal teeth, and the tail is heterocercal, not diphycercal, as in the other Dipnoans generally.
- In the Ctenodontidæ the tail is diphycercal, and no jugular plates are present in the known specimens.
- The tail is diphycercal in all, ending in a long point, and the body is covered with cycloid scales.
- The tail is heterocercal, but in some cases (Squatina) approaches the diphycercal condition.
- The blade of the caudal fin is then divided into two nearly equal portions, and is said to be diphycercal.