Diagnosis
provided by World Register of Marine Species
Test free, consisting of thick tube that branches at irregular intervals, not radiating from a central area as in Astrorhiza; wall of firmly cemented coarse sand grains, with rough exterior, thick inner organic lining protrudes either as simple or furcating tubes from the ends of the agglutinated branches, the large amount of organic material allowing the arms to be somewhat flexible; apertures at the ends of the branches. Holocene; N. and S. Atlantic; N. and S. Pacific; Arctic Ocean. (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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