Punjab Univ. J. Zool., Vol. 31 (2), pp. 243-248, 2016 ISSN 1016-1597(Print) ISSN2313-8556 (online) 64-PUJZ-61028240/16/0243-0248 Copyright 2016, Dept. Zool., P.U., Lahore, Pakistan *Corresponding author: majid.zool@pu.edu.pk Original Article Propotamochoerus hysudricus remains from late Miocene deposits of Hasnot, Pakistan Hafiz Muhammad Awais Sarwar, Muhammad Tahir Waseem, Abdul Majid Khan*, Rana Manzoor Ahmad Department of Zoology, University of the Punjab, Lahore, Pakistan (Article history: Received: April 28, 2016; Revised: December 19, 2016) Abstract New fossil remains of the Suid species, Propotamochoerus hysudricus are described in this paper on the basis of their morphometric characters. This is perhaps the only known species of the genus Propotamochoerus in the Siwaliks. The specimens are collected from the outcrops of Hasnot type locality, Punjab, Pakistan. The present findings will strengthen the previous records of the species Propotamochoerus hysudricus from the Late Miocene Siwaliks of Pakistan. This species can act as a marker suid species of the Late Miocene Siwalik deposits. Key words: Late Miocene, Hasnot, Siwaliks, Suidae, Propotamochoerus hysudricus. To cite this article: SARWAR, H.M.A., WASEEM, M.T., KHAN, A.M. AND AHMAD, R.M., 2016. Propotamochoerus hysudricus remains from late Miocene deposits of Hasnot, Pakistan. Punjab Univ. J. Zool., 31(2): 243-248. INTRODUCTION amily suidae is not only an economically important taxon of order Artiodactyla but also the fossilized extinct species of this family contributing a lot in mammalian evolutionary studies as suids established an evolutionary linkage between order Artiodactyla and order Cetacea. Tertiary deposits of Asia have abundant remains of suid species playing central role in adaptive radiation of this family (Pickford, 1993). Siwalik sediments are a rich source of fossils of extinct suid species having varied stratigraphic ranges. Miocene-Pliocene is a time of high diversity of different mammalian families (as is the case with family Suidae. Suid genera such as Propotamochoerus, Hippohyus and Hippopotamodon are the part of palaeo communities of this time span. Propotamochoerus hysudricus is a species of genus Propotamochoerus present in Siwalik outcrops having an age of 10-06 Ma (Stehlin, 1900). Many authors described this species with different names, so it has very complex synonym list (Pickford, 1988; Bonis and Bouvarain, 1996). Pickford (1988) did an extensive study about Propotamochoerus hysudricus. Newly discovered fossils included in this study belongs to the species, Propotamochoerus hysudricus, this taxon is assigned to these remains based on their comparative analysis by Pickford (1988) reported features of this species. The specimens described in this paper were collected from different localities around Hasnot village (Lat. 32 49 N: Long. 73 18 E), that is present at 90 km away from the Dhok Pathan type locality of the Siwaliks Potwar Plateau, Punjab, Pakistan and is situated in west of the Jhelum city at a distance of 70 Km (Waseem et al., 2016), (Fig. 1). Dhok Pathan Formation belongs to Middle Siwaliks of Pakistan. According to Barry et al. (2002) magnetic polarity and stratigraphic dating of the Dhok Pathan Formation (the Formation to which Hasnot locality belongs), suggested that mid Late Miocene to early Pliocene is the stratigraphic range of this Formation and thickness varied between 950- 1200 meters at different places. This Formation consists of alternate sandstone, clay stone/siltstone beds. The sandstone is hard, cemented and thickness is from few meters to more than 90 meters. Hard, dark grey, greenish-grey or brown clay stone layers are present over silty clays along with lamination of calcium carbonate at certain places. The color of clays is orange brown (Shah, 2009). The fossiliferous area around Hasnot village includes 27 localities as described by Colbert F