It is clear after the brief review of the connections that can be traced between prehistoric Thessaly and the adjacent regions, given in the last three chapters, that any chronological system for North Greece must be based on the wares imported from the south. Thus the true fixed point for chronological purposes lies in the Late Minoan III sherds found in Thessaly, for it is not known if local wares were found with the L.M. II vases. But it is perhaps legitimate to regard Orchomenos, which finally became a Mycenean city, for chronological purposes as a southern site. There below the fourth stratum, which contained L.M. III pottery, was a stratum of Minyan ware, in which Mattmalerei also occurred. This stratum is dated by Bulle as contemporaneous with the shaft graves at Mycenae, which fall in L.M. I and II, that is to say according to Evans' dating between 1600 and 1350 b.c. On the other hand in Thessaly, wherever Minyan has been found with any Mycenean ware, it usually appears as in Zerelia VIII and Tsani VIII, together with L.M. III ware. It also seems to occur, as far as our present knowledge goes, with L.M. III at one of the prehistoric sites by Dhrakhmani and at Troy. At Eleusis it was found both with L.M. III and Mattmalerei.