Published online by Cambridge University Press: 01 May 2009
The vertebrate fauna from the Bugti Bone Beds was at first assigned an Upper Nari age by Pilgrim. Later, he assigned them to the Gaj, on the basis of the identification of three species of Ostrea by Vredenburg. Regional field work carried out by members of the geological staff of the Burmah Oil Co., Ltd., showed that the beds really belonged to the Upper Nari after all. Re-examination shows that the identifications of the oysters cannot be upheld, and that there is no palaeontological evidence against the beds being of Upper Nari (Basal Miocene) age. It is therefore necessary to regard the vertebrate fauna as being of Upper Nari (Basal Miocene) age. A list of the species is given for purposes of reference.