Fabiania is a genus of large fossil benthic calcareous forams with a range extending from the Upper Paleocene to the Upper Eocene. The test, which is up to 4 mm in diameter, is in the shape of a more-or-less flattened cone with hollow center and bluntly rounded apex. The outer wall is thick and finely perforate, umbilical side and partitions imperforate, surface smooth to papillate: aperture in the earliest chambers a simple arch, later with a single row of large openings leading into the broad open umbilicus. The test begins with three thick-walled and perforate globose chambers. followed by a few chambers about one-half coil in length. with later chambers added in cyclic series or tiers. Short horizontal and vertical partitions arising from the inside of the outer wall form numerous coar