Similar glacigene rocks of Pennsylvanian age are present in basins in Yemen, Oman and Pakistan, now widely separated but originally close. Correlation using a palynological biozonation based in the Al Khlata Formation of interior Oman has indicated the widespread nature of glacial sediments of a relatively narrow biostratigraphic age range (the Oman P5 unit) across Oman, Yemen and Pakistan. Thirty nine samples from the upper 84 m of a 125 m thick section of the Tobra Formation at Zaluch Nala, western Salt Range, Pakistan yielded palynomorph taxa indicating the South Oman 2165B Biozone. Seven samples from the Yemen Kuhlan Formation, and 22 samples from the underlying Akbarah Formation from approximately 180m of a section near Kuhlan in northwest Yemen suggested a 2165A Biozone age. In neither the Pakistan nor the Yemen sections is there evidence of the younger ‘deglacial’ sediments of 2141B age which are present in Oman. This could be due to subsidence related to sub-Al Khlata Formation salt withdrawal which may have acted against isostatic uplift during the deglacial period, allowing the sediments to be preserved.