Complex sentence: The story revolves around a strange Louisiana swamp creature, which was a cloned dinosaur pliosaurus by a scientific, the notable zoologist (and ex-husband of the protagonist, Laura Le Crois), Dr. Charles LeBlanc.
Split into simpler sentences: The story revolves around a strange Louisiana swamp creature, which was a cloned dinosaur pliosaurus. The creature was created by zoologist (and ex-husband of the protagonist, Laura Le Crois), Dr. Charles LeBlanc.