Sergi (1910 p. 472) established Palaeanthropus europeus with the type specimen series Neanderthal-Spy-Krapina. Campbell (1965) lists the name as an available, objective junior synonym to Homo neanderthalensis King, 1864. The nomen 'europeus' is also a secondary junior homonym to Homo europeus Wilser 1898 if the two species are placed in the same genus.
