This criticism is supported by Phillip Endicott of the Musée de l'Homme, Paris. His studies of human and Neanderthal DNA have shown the latter did not appear as a separate species until 400,000 years ago. "Yet the bones in La Sima, which bear Neanderthal features, are supposed to be 600,000 years old," he said. "This cannot be true."
This is how evidence is destroyed,ignored and manipulated to fit in with mainstream beliefs.
Nice swerve but an argument between scientists on the age and species/subspecies of human at La Sima de los Huesos, Homo heidelbergensis versus Homo neandertalensis, has nothing to do with the genetic origin of Homo sapiens (US). From the article itself: