Tertiary foraminifera belonging to Discorbis and Quinqueloculina are discov
ered by the author from the limestones of Bilara Group of Marwar Supergroup
. These rocks are hitherto regarded as unfossiliferous and Neoproterozoic-E
ocambrian in age. The present find of foraminifera suggests that the format
ions are not older than lower Eocene, throwing new light on the age of the
Marwar Supergroup from the study area.