Cuvier escaped the guillotine, but not all the pervasive
falsehoods of his time. He realized that animals had become
extinct, against the popular notion that they would be found in a
remote southern jungle, but could not embrace evolution, at least
as explained by Lamarck (nor can we), and he was influenced by the
racist attitudes and religious teachings of his time.
See also in The book of science:
Readings on wikipedia: