Complex sentence: The light-hearted article speculated that the creature might be a turtle or some mutant experiment from the Plum Island Animal Disease Center before noting that Larry Penny, the East Hampton Natural Resources Director, had concluded it was a raccoon with its upper jaw missing.
Split into simpler sentences: The light-hearted article speculated that the creature might be a turtle or some mutant experiment from the Plum Island Animal Disease Center. It then noted that Larry Penny, the East Hampton Natural Resources Director, had concluded that it was a raccoon with its upper jaw missing.