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Baron
Georges Léopold Chrétien Frédéric Dagobert
Cuvier proved that species have
become extinct over the ages, was a proponent of
the theory of catastrophism, developed the theory
that an animal's anatomy adapted to its
"conditions of existence," and was one
of the first to classify animals into kingdoms
according to anatomical similarities. |
Alexander Wilson
was the author of the 13-volume American
Ornithology, which included illustrations of
268 different species of birds, 26 of which had
never before been described. |
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