Diagnosis
provided by World Register of Marine Species
Test free, with irregularly globular chambers that increase in size with growth, aligned in a roughly uniserial, biserial, or wholly irregular series; wall with very thin inner organic layer and an outer homogeneous imperforate agglutinated layer of fine sand with rare larger grains, held in an organic cement; aperture terminal, rounded, bordered by an extension of the inner organic wall layer that projects over the apertural edge, apertural opening also may be closed within by a thin cover consisting of the inner organic layer. Holocene; USA: S. California; Canada: Prince Edward Island; Brazil: W. of Rio de Janeiro. (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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