Original sentence: Opponents note that the proponent's portrayal of the Cambrian explosion as a single event in which complex life forms appear suddenly with no ancestral fossils is not a position found in modern paleontology and so is a conflation of past issues.They assert that recent scientific literature has noted that the evidence points to a Cambrian explosion that "was even more abrupt and extensive than previously envisioned
Edited sentence: Opponents note that the proponent's portrayal of the Cambrian explosion is a single event in which complex life forms appear suddenly with no ancestral fossils is not a position found in modern paleontology and so is a conflation of past issues.Recent scientific literature has noted that the evidence points to a Cambrian explosion that "was even more abrupt and extensive than previously envisioned