|Fig. 1 - Typical Pre-Dynastic Pottery, Brooklyn Museum|
Then scholars decided that there were not really three separate cultures in Pre-Dynastic Egypt, but rather there was only one with three sub-periods, Naqada I, Naqada II and Naqada III. The pottery of each period is quite distinctive and can easily be recognized, even by a confirmed non-pottery person such as myself.
|Fig. 2 - Pottery from Naqada I (left) and Naqada II (right)|
|Fig. 3 - Naqada III pot with painted boat decoration|
In figure 3 the pot is decorated with a painted boat with oars and two small "buildings" on the deck of the boat. This is a very typical type of decoration for the pottery of this era and serves to remind how the Nile formed the primary travel route in Egypt even in the earliest of times.
Or is this right? According to the Oxford History of Ancient Egypt, the Badarian Period is now, once again, called the Badarian. Naqada I is what used to be called the Amratian, Naqada II is what used to be called the Gerzean, while Naqada III may have seen a Pre-Dynastic unification of Egypt (the evidence for this is that local Lower Egyptian pottery is replaced by Upper Egyptian Naqada pottery in Naqada III).
Incidentally, I corrected a paragraph above to read "Badarian" not "Bavarian" (spell check strikes again!)