This is an accepted version of this page Passer predomesticus is a fossil passerine bird in the sparrow family Passeridae.

The bones were described by Israeli palaeontologist Eitan Tchernov in 1962[1] and reviewed by South African zoologist Miles Markus two years later.

[2] Tchernov did not unambiguously identify a type specimen and his paper was said by Robert M. Mengel, the editor of The Auk, to contain "many troublesome lapses and contradictions".

[4] Tchernov argued that the house sparrow and related species have undergone considerable morphological changes in adapting to a commensal relationship with humans, with the beak becoming longer and narrower.

[5] In a 1984 paper, Tchernov suggested that the period in which the house sparrow and P. predomesticus could have separated was the Würm glaciation 70,000–10,000 years ago.

[8] Drawing on more recent studies of molecular data, Ted R. Anderson stated in his 2006 Biology of the Ubiquitous House Sparrow that all Passer species have a long evolutionary history, with speciation possibly occurring as early as the Miocene.