"Moreover, all our knowledge of organic remains teaches us, that species have a definite existence, and a centralization in geological time as well as in geographical space, and that no species is repeated in time"

This quote by Edward Forbes suggests that types have actually a repaired presence and are not duplicated in time. He is implying that species have a centralization in both geological time and geographical space. This suggests that species are not arbitrarily dispersed throughout time and area, however rather they are localized in particular areas and specific amount of times. This quote also suggests that our understanding of organic remains can teach us about the presence of species and their centralization. This implies that by studying fossils and other organic remains, we can acquire insight into the history of types and their distribution. Overall, this quote suggests that species have actually a fixed presence and are not randomly dispersed throughout time and space.