Definition of Protocercal. Meaning of Protocercal. Synonyms of Protocercal

Here you will find one or more explanations in English for the word Protocercal. Also in the bottom left of the page several parts of wikipedia pages related to the word Protocercal and, of course, Protocercal synonyms and on the right images related to the word Protocercal.

Definition of Protocercal

Protocercal
Protocercal Pro`to*cer"cal, a. [Proto- + Gr. ? the tail.] (Zo["o]l.) Having a caudal fin extending around the end of the vertebral column, like that which is first formed in the embryo of fishes; diphycercal.

Meaning of Protocercal from wikipedia

- often fan-shaped. The tail may be heterocercal, reversed heterocercal, protocercal, diphycercal, or homocercal. Heterocercal: vertebrae extend into the...
- not extend to the tip the upper lobe (e.g. in stem Neopterygii) (B) - Protocercal means the vertebrae extend to the tip of the tail and the tail is symmetrical...
- main propulsion organs. Most median fins disappeared, leaving only a protocercal tailfin. Since the shallows were subject to occasional oxygen deficiency...