Genus Cyclastrum Rüst, 1898

TYPE SPECIES. — Cyclastrum infundibuliforme Rüst, 1898 by original designation.

Carter,Whalen & Guex,1998, Orbuk-46; P, Crucella mijo De Wever,1981,Orbuk-47; Q - R, Crucella mirabunda Whalen & Carter,2002, Orbuk-44; S - T, Cyclastrum scammonense Whalen & Carter, 2002, Orbuk-36; U - V, Paronaella grahamensis Carter in Carter, Cameron & Smith, 1988; U, Orbuk-36; V, Orbuk-38; W, Paronaella tripla De Wever, 1981, Orbuk-41; X, Y, Serilla tledoensis (Carter, 1993), Orbuk-15. Scale bar: A-D, F-G, K-O, X, Y, 120 µm; E, H-J, P-V, 170 µm; W, 200 µm.