Turritella austinesis

The apical angle of this species is 18 and sutural angle is 11.  The shell is medium sized, tapering, whorls six or more in number.  The sides of the whorls are lat, the suture is not well defined, the height of the whorls are narrow in comparison with the width.  They are ornamented with five nodular ribs with the largest being at the posterior side of the whorl.  This specimen was found in the Georgetown Limestone, Shoal Creek, Austin, Texas.