Richard Owen had expertise in comparative anatomy and his professional judgements revealed a succession of similar species in the same locality, giving Darwin insights which he would later recall as being central to his new views.
Richard Owen tiña grande experiencia en anatomía comparada e os seus xuízos profesionais revelaban unha sucesión de especies similares nun mesmo lugar, dándolle pistas a Darwin do que posteriormente lembraría como eixe central da súa nova visión.