Hybrid Species by Robert Sepehr
There are numerous examples where two separate and distinct species, often with a different numbers of chromosomes, can produce viable hybrid offspring. By sequencing and comparing the complete genomes of the various races of modern humans, with the genomes of archaic species, such as Neanderthals, Homo erectus, Denisovans, and others, we can trace the hybridization which resulted in modern humans.
Species with Amnesia: Our Forgotten History
Species with Amnesia: German
Species with Amnesia: Spanish
Robert Sepehr is an author, producer and anthropologist specializing in linguistics, archeology, and paleobiology. http://www.amazon.com/Robert-Sepehr/e/B00XTAB1YC/