- On the other hand, the Uniformitarians, who not only reject the hypothesis of development, but deny that the modern forms of life are higher than the ancient ones, reply that the paleontological evidence is at present very incomplete; that though we have not yet found remains of highly- organized creatures in strata of the greatest antiquity, we must not assume that no such creatures existed when those strata were deposited; and that, probably, search will eventually disclose them. - "Essays: Scientific, Political, & Speculative, Vol. I", Herbert Spencer.
- Nothing in his paleontological studies ever interested Agassiz more than this curious fauna of the Old Red, so strange in its combinations that even well- informed naturalists had attributed its fossil remains to various classes of the animal kingdom in turn, and, indeed, long remained in doubt as to their true nature. - "Louis Agassiz: His Life and Correspondence", Louis Agassiz.
- Among those who came to give occasional help were Mr. Lesquereux, the head of paleontological botany in this country; M. Jules Marcou, the geologist; and M. de Pourtales, under whose care the collection of corals was constantly improved and enlarged. - "Louis Agassiz: His Life and Correspondence", Louis Agassiz.