( a. )
Having a caudal fin extending around the end of the vertebral column, like that which is first formed in the embryo of fishes; diphycercal.
( a. )
Having a caudal fin extending around the end of the vertebral column, like that which is first formed in the embryo of fishes; diphycercal.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012