 A depiction of a building using this kind of architecture is also an integral part of the serekh, the early Egyptian seal of kingship, and is found before the 1st Dynasty as well in the Naqada III, or "Dynasty 0" period.He says, "It is highly improbable that such specialized building techniques were independently invented in two widely separated regions at the same historical period without cultural transmission.In addition to the evidence available to Petrie et al., proponents also point out similarities in the names of divinities and places in the religious beliefs of the two cultures, and in depictions of regalia.