 Ryholt - like Manfred Bietak - argues that it was a forerunner of the 15th Dynasty, but differs in regarding it as contemporary with the 13th Dynasty from the latter's founding around 1800 BC until its collapse in c. 1650/1648 BC.This is contested in review of the book by Daphna Ben Tor and James/Susan Allen.Ryholt's proposal that king Sheshi, 'Ammu Ahotepre and Yakbim Sekhaenre were also rulers of the 14th Dynasty is contradicted by Ben Tor's study of the known strata levels of their seals which, in her view, indicate that they date to the second half of the Hyksos 15th Dynasty and are not contemporary with the 13th dynasty.