dcsimg

Diagnosis

provided by World Register of Marine Species
Test attached, tiny, 0.2 mm to 0.25 mm in diameter, two to three rapidly enlarging whorls forming a very low trochospiral, chambers numerous, narrow, septa strongly arched, extending back at the periphery, with open umbilicus expanding radially at the sutures to appear stellate in outline; wall finely agglutinated, single layered, thin, and imperforate, chamber walls collapsing on the umbilical side; primary aperture interiomarginal and extraumbilical with secondary opening directed slightly backwards at the umbilical tip of the final chamber, those of earlier chambers remaining open into the umbilical cavity. Holocene; N. Atlantic, in shallow water. (Loeblich & Tappan, 1987, Foraminiferal Genera and Their Classification)

Reference

Loeblich, A. R.; Tappan, H. (1987). Foraminiferal Genera and their Classification. Van Nostrand Reinhold Company, New York. 970pp.

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WoRMS Editorial Board
contributor
Tomas Cedhagen [email]