On the other hand, all the chief laws of palaeontology plainly proclaim, as it seems to me, that species have been produced by ordinary generation: old forms having been supplanted by new and improved forms of life, the products of variation and the survival of the fittest.
Beste alde batetik, paleontologiako lege nagusi guztiek argi aldarrikatzen dute, ene ustez, espezieak birsorkuntza arruntez sortu direla: aldakuntzaren eta egokienen biziraupenaren ekoizkin diren bizi-forma berri eta hobetuek forma zaharrak ordezkatuz.