I'm not asking you to prove a negative. I'm asking you to give me an example of a change mechanism required by evolution that cannot be observed today, or which has not been observed and studied in the laboratory.
What prevents a person who has been observed to walk for several miles from walking a hundred miles, or a thousand.? This no different than the expectation in physics that Pluto, having been observed since 1930, will complete a full orbit of the sun, and that it has already completed many such orbits -- even though Pluto has not been observed to complete a full orbit.
I didn't ask for evolutionary anachronisms. I asked for an example from the fossil record of a rate of change that exceeds rates of change observed in the present.