Schewiakoff, 1926)All spicules of equal length, proximally 4-edged, with 2 small opposed, forking apophyses, distally cylindrical, sharp. Ectoplasmic cortex of calymma 2-layered. Shell length: 1.6 mm; spicule length: 0.8 mm; diameter of cell body: 0.2 mm.
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