(April 21, 2014 at 9:10 am)Revelation777 Wrote: Trilobites are an example of an organism appearing suddenly in the fossil record void of any evidence of transitions. Furthermore, trilobites have an organized complexity comparable to modern day invertebrates.
When evolution occurs, the rate at which a form changes is not constant. Sometimes changes in the form occur very rapidly and sometimes they occur very slowly. Trilobites appeared when evolution "settled" on a particular form.