Diagnosis
provided by World Register of Marine Species
Test elongate, ovate in section, early stage biserial, later uniserial and rectilinear, each chamber somewhat overlapping that preceding; wall finely agglutinated, canaliculate, surface smoothly finished; aperture terminal, ovate, with thickened margin, and with a half funnel-shaped tooth plate attached to one margin and extending within for less than half the length of the chamber lumen, those of successive chambers alternating in orientation by 180¡ thereby reflecting the earlier biserial development. Holocene; China: Xisha Islands, Guangdong Province. (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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