Cite
 

Meaning of living fossil

liv'ing fos'sil

Pronunciation: [key]
  1. an organism that is a living example of an otherwise extinct group and that has remained virtually unchanged in structure and function over a long period of time, as the coelacanth and the horseshoe crab.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.