D'Orbigny, being a special creationist, failed to recognize the bearing of these individual stages on evolution.
He also seemed to question whether anyone with creationist views should be allowed to hold headship of a state school.
His reactionary and retarding ideas as a special creationist and his advocacy of the cataclysmic theory of change exerted a baneful influence until overthrown by the uniformitarianism of James Hutton (1726-1797) and Charles Lyell (1797-1875) and the evolutionism of Darwin.
Be aware that the books will be secular in nature, so if you are teaching from a creationist viewpoint, you will want to keep this in mind as you go through the curriculum.
Agassiz continues, however, in terms characteristic of the creationist school: " But this connexion is not the consequence of a direct lineage between the faunas of different ages.