 The most prominent retention of Latin occurs in the classification of living organisms and the binomial nomenclature devised by Carl Linnaeus, although the rules of nomenclature used today allow the construction of names which may deviate considerably from historical norms.Another continuation is the use of Latin names for the constellations and celestial objects (used in the Bayer designations of stars), as well as planets and satellites, whose surface features have been given Latin selenographic toponyms since the 17th century.Symbols for many of those chemical elements of the periodic table known in ancient times reflect and echo their Latin names, like Au for (gold) and Fe for (iron).