A nomenclatural note on Mosasaurus hoffmanni (Squamata, Mosasauroidea)

The historically important mosasaur fossil (known as 'le grand animal fossile des carrieres de Maestricht') has been known as Mosasaurus hoffmanni for almost two centuries now. Recently, it has been proposed to amend the spelling of the species name, by adding a second 'i' to the species epithet. We present historical evidence to the contrary, and recommend, following article 33.2.3.1 of the ICZN, to retain the specific epithet hoffmanni.