Diagnosis
provided by World Register of Marine Species
Test discoidal, circular to ovate in outline, strongly compressed, planispiral and evolute throughout, early stage not elevated above the level of the later whorls, chambers onehalf coil in length, increasing very slowly in height as added, final whorl with two and a half chambers; wall calcareous, imperforate, smooth, hyaline in appearance, with a row of tiny pores and short grooves perpendicular to and just anterior to the sutures of the final whorl as in Polysegmentina; aperture at the end of the final chamber, with numerous pores in an ovate convex trematophore. Holocene; Sri Lanka; Philippines. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)
Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp.
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