The generic name refers to Rinc�n de los Sauces, where the fossils were discovered, while the specific name, " caudamirus ", means " amazing in the tail " in Latin, in reference to the unusual shape of the tail vertebrae, especially a strange sequence of procoelous, amphicoelous, opisthocoelous, biconvex and ultimately again procoelous vertebrae shown by one individual.
