Complex sentence: The valley and ridge salamander ("Plethodon hoffmani") is a species of salamander in the family Plethodontidae endemic to the Appalachian Mountains in the Eastern United States.
Split into simpler sentences: The Valley and ridge salamander ("Plethodon hoffmani") is a species of salamander in the family Plethodontidae. It is endemic to the Appalachian Mountains in the Eastern United States.