Hypothetical Extinct Species

Several extinct species have been postulated, but owing to a lack of evidence they can only be regarded as hypothetical extinct species. They have caused confusion, as they may have been a separate species, a subspecies, or an introduced species.

Read more about Hypothetical Extinct Species:  Parrots

Famous quotes containing the words extinct and/or species:

    One realises, with horror, that the race of men is almost extinct in Europe. Only Christ-like heroes and woman-worshipping Don Juans, and rabid equality-mongrels. The old, hardy, indomitable male is gone.
    —D.H. (David Herbert)

    The principle of avoiding the unnecessary expenditure of energy has enabled the species to survive in a world full of stimuli; but it prevents the survival of the aristocracy.
    Rebecca West (1892–1983)