The Sampaolesi Line is a term used to describe a specific lineage of primates that lived during the Oligocene epoch. However, there are several synonyms for this term depending on the context. Some of these synonyms include the Protopithecidae, the Oreopithecidae, and the Dolichopithecidae. These terms are all used to refer to a group of apes that lived during the same period and share similar physical and genetic traits. Even though the term Sampaolesi Line is the most commonly used, these synonyms are useful for scientists who want to discuss this lineage without using the same word repeatedly.