Elongated skulls

The evidence of deformed (or may be just different race) ancient Egyptian of human head is not left alone. There are numerous skulls found in Peru area that are kept in at least one local museum. Some of them are said to be deformed purposefully from childhood and their velocity is similar to "normal" skull. However the velocity of others are considerably larger than "normal" suggesting that the artificial shaping could not be "blamed" for it leaving us with different theories. My guess again is that there might be a link between ancient Egyptian sculptures of humans of elongated skulls and numerous South American skulls and a race of beings with elongated skulls have lived once on both sides of the ocean. How did they travel and spread there and why have they disappeared (or have they?) would be a different story.