Sivaceros gradiens Pilgrim 1937 (Mammalia, Bovidae, Boselaphini) from the Lower Siwaliks of Dhok Bun Amir Khatoon, Chakwal, Pakistan: systematics and biostratigraphy

Authors: MUHAMMAD AKBAR KHAN, MUHAMMAD AKHTAR, GHAZALA ROHI, MEHBOOB IQBAL, KHIZER SAMIULLAH

Abstract: A left horn core of Sivaceros gradiens Pilgrim 1937 from Dhok Bun Amir Khatoon in the Lower Siwaliks of Pakistan was recovered, identified, and compared. Earlier specimens of S. gradiens excavated from the Lower Siwaliks of Pakistan were difficult to date. Conversely, the new material of S. gradiens from the Lower Siwaliks of Dhok Bun Amir Khatoon suggests an early Middle Miocene age (lower Chinji) for this species.

Keywords: Sivaceros gradiens, boselaphines, Lower Siwaliks, Middle Miocene, Dhok Bun Amir Khatoon

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