Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having a caudal fin extending around the end of the vertebral column, like that which is first formed in the embryo of fishes; diphycercal.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having a caudal fin extending around the end of the vertebral column, like that which is first formed in the embryo of fishes; diphycercal.

from The Century Dictionary and Cyclopedia

  • Having a primitive tail-fin: noting the embryonic stage of the vertical fins and tail of a fish, when these consist of a continuous skinfold along both upper and under sides of the body and around its tail-end.

Etymologies

proto- + Ancient Greek tail. (Wiktionary)

Examples

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