Macrurosaurus is a genus of dinosaur that lived during the Late Cretaceous period. It was a herbivorous dinosaur that is known from fossil remains found in Europe. The name Macrurosaurus means "long-tailed lizard", which accurately describes its most prominent feature. However, there are other synonyms that have been proposed for this genus over the years. Some of these synonyms include Paramacrurosaurus, which means "near Macrurosaurus", and Cetiosauriscus, which means "whale lizard". Both of these names reflect the similarities that have been observed between Macrurosaurus and other dinosaur species. Regardless of the name used, Macrurosaurus remains one of the most fascinating and well-known dinosaurs of the Late Cretaceous period.