from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An organism, such as a coelacanth or the ginkgo, that is the sole surviving member of an otherwise extinct taxonomic group.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any species discovered first as a fossil and believed extinct, but which is later found living.
  • n. Any living species which very closely resembles fossil relatives in most anatomical details.


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