Several writers anticipated evolutionary aspects of Darwin's theory, and in the third edition of On the Origin of Species published in 1861 Darwin named those he knew about in an introductory appendix, An Historical Sketch of the Recent Progress of Opinion on the Origin of Species, which he expanded in later editions.
Varios escritores anticiparon aspectos evolutivos da teoría de Darwin, e na terceira edición de A orixe das especies publicada en 1861 Darwin nomeou a aqueles que coñecía nun apéndice introdutorio, An Historical Sketch of the Recent Progress of Opinion on the Origin of Species, que el explicou en posteriores edicións.