[Geology] may be looked upon as the history of the earth's changes during preparation for the reception of organized beings, a history, which has all the character of a great epic.
Edward ForbesAs we descend deeper and deeper in this region its inhabitants become more and more modified, and fewer and fewer, indicating our approach towards an abyss where life is either extinguished , or exhibits but a few sparks to mark its lingering presence.
Edward ForbesPalaeontological research exhibits, beyond question, the phenomenon of provinces in time, as well as provinces in space. Moreover, all our knowledge of organic remains teaches us, that species have a definite existence, and a centralization in geological time as well as in geographical space, and that no species is repeated in time.
Edward Forbes