Other evidence for the inclusion of both styles of evolution is the consideration of how organisms relate and may interact. Two species that diverged from each other over time may both still possess a characteristic that only one still uses. The species that doesn't use the characteristic might begin to use it for an alternate function, causing difficulty when trying to track evolution. Fossils do not always show the evolution of function.
Punctuated gradualism
Affective spectrum
Modic changes
Stereotypy
Skew deviation
Hyperintensity
Baricity
Threshold expression