Complex sentence: The novel also clarifies an issue only hinted at in the film: when Dr. Ostrow dissects one of the Earth type animals, he discovers that its internal structure is altogether unlike that of any real animal.
Split into simpler sentences: The novel also clarifies an issue only hinted at in the film. When Dr. Ostrow dissects one of the Earth type animals, he discovers that its internal structure is altogether unlike that of any real animal.