The genus name Leviathan, proposed in this Letter for a new fossil physeteroid from the Miocene of Peru, is preoccupied by Leviathan Koch, 1841 (ref. 1), a junior subjective synonym of Mammut Blumenbach, 1799 (ref. 2). We propose here a replacement name Livyatan gen. nov. The type species is placed in this genus to form the binomial Livyatan melvillei. The diagnosis and content of the new genus follow our Letter. ‘Livyatan’ is a Hebrew name applied to large marine monsters in popular and mythological stories. We thank M. P. Taylor and D. Yanega for bringing this to our attention.
- 1841) Description of the Missourium, or Missouri Leviathan 2nd edn (Prentice & Weissinger,
- 1799) Handbuch der Naturgeschichte, 6. Auflage (Göttingen,