designating, of, or having a tail fin in which the upper and lower lobes taper symmetrically to a point to which the spinal column extends
Origin of diphycercalfrom Classical Greek diphy?s, twofold ( from di-, di- + phyein, to bear, bring forth: see be) + kerkos, tail + -al
Having or designating a tail fin in which the vertebral column extends to the tip, with symmetrical upper and lower parts, as in the lungfishes.
Origin of diphycercalGreek diphuēs double ; see diphyodont . kerkos tail -al 1
- (zoology) Describing a symmetric tail fin in which the vertebral column extends to the tip