Complex sentence: Gregory S. Paul reassessed the material as pertaining to a large species of "Allosaurus" in 1988 ("Allosaurus amplexus "), and other authors have gone further with the comparison and considered"E. amplexus " simply a large individual of"Allosaurus fragilis".
Split into simpler sentences: Gregory S. Paul reassessed the material as pertaining to a large species of "Allosaurus" in 1988 (which he classified as "Allosaurus amplexus"). Other authors have gone further and considered "E. amplexus" as simply a large individual of "Allosaurus fragilis".