Homo (Protanthropus) Bonarelli, 1909
Year: 1909
Taxonomic Rank: Subgenus
Holotype: Neanderthal 1
Status: Potentially valid

Bonarelli employed Protanthrous Haeckel, 1895 as Homo (Protanthropus) neanderthalensis (King, 1894) Bonarelli, 1895. Campbell (1965) listed Protanthropus Haeckel as nomen nudum, so Bonarelli (1909) becomes the first established use. 

Authorship Reference
G. Bonarelli
Le razze umane e le loro probabili affinità
Bollettino della Società Geografica Italiana, 10(4), 953-979, 1909
Additional References
W. King
The reputed fossil man of the Neanderthal
Quarterly Journal of Science, 1, 88-97, 1864
B. Campbell
The nomenclature of the hominidae, including a definitive list of hominid taxa
Occaisional Papers of the Royal Anthropological Institute, 22, 1-33, 1965