Buffon wrote a fairly prominent article about "American degeneracy" where he claimed that natural objects, fauna, wild life and even people, in the New World were inferior to those of Eurorasia. He stated:
"That the animals common both to the old and new world, are smaller in the latter; that those peculiar to the new, are on a smaller scale; that those which have been domesticated in both, have degenerated in America; and that on the whole the New World exhibits fewer species."
He believed that the cold weather and the humidity resulted in smaller and inferior creatures. This probably arose from the fact that most of the French, when visiting the New World, visited Quebec (cold) or New Orelans (humid). He had a very limited dataset so he postulated incorrectly.
Jefferson was so incensed by this that, as President, sent 20 men into the forests of New Hampshire to find a bull moose. He ended up having a carcass shipped to France and Buffon retract his statements, but the idea of New World inferiority lived on for decades if not for centuries.