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Maastrichtian ammonites are described from two areas in Pakistan. The upper part of the lower unit of the Korara Shale in the southern Pab Range, Kirthar Province, southern Balochistan, is dated as Late Maastrichtian, based on the presence of Menuites fresvillensis (Seunes, 1890), which is accompanied by abundant Indoceras baluchistanense Noetling, 1897, common Baculites ambatryensis Collignon, 1971, and rarer Neophylloceras surya (Forbes, 1846), Gaudryceras kayei (Forbes, 1846), Anagaudryceras politissimum (Kossmat, 1895), Kitchinites spengleri n. sp., Pachydiscus (Pachydiscus) noetlingi n. sp., Libycoceras acutodorsatus (Noetling, 1897), and Diplomoceras cylindraceum (Defrance, 1816). A smaller assemblage from the Mughal Kot Formation near Kach, Suleman Province, northern Balochistan cannot be dated more precisely than Maastrichtian from the presence of Pachydiscus (Pachydiscus) neubergicus (Hauer, 1858), the first occurrence of which has been provisionally adopted by the Subcommission on Cretaceous Stratigraphy as marking the base of the Maastrichtian stage. It is associated with numerous Eubaculites binodosus (Noetling, 1897).

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Microfacies analysis and ammonite biostratigraphy of the Mianwali Formation of the Kala China Range were worked out on the basis of stratigraphic sections from Chak Jabbi and Bagh. Four microfacies were identified from the Chak Jabbi section while amrnonite biostratigraphy was studied from both the sections. Filamentous bivalves in micrite deposited along a shelf margin below normal wave base represent the first microfacies. The second microfacies contains bioclastic wackestone deposited in an open marine environment of normal salinity. The third microfacies consists of lime mudstone formed in a stressed environment of lagoonal conditions, whereas the fourth microfacies of dolomitised carbonate mudstone was formed by the diagenetic dolomitisation of the third microfacies. The new collection of ammonites includes Arctoceras tuberculatum, Anakashmirites aff. evolutus, Meekoceras gracilitatis, Stephanites sp., Pseudoceltites sp., Subvishnuites aff. welteri, Arnautoceltites sp., Owemtes sp. indet, Subvishnuites aff. enveris, Pseudosageceras sp. indet, Paranannites sp., Subcolumbites sp., Anasibrites sp., and Pseudaspidites sp, confirming the already known Sctythian age of the Mianwali Formation.

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