Genus Sivapithecus, commonly referred to as "Ramapithecus," is an extinct hominid genus which lived in South Asia around 12 to 7 million years ago. The term "Sivapithecus" comes from the region it was first discovered - the Siwalik Hills in northern India. Over the years, scientists have used various synonyms to refer to different species of the Genus Sivapithecus. Some of these synonyms include "Dryopithecus," "Laccopithecus," and "Rudapithecus." These names were created based on different physical features and fossils discovered throughout the region. While the exact classification of this genus remains a topic of debate among researchers, studying the various synonyms has helped shed light on the evolution of early hominids.