Nannotax Enabling nannofossil research

Description: Coccospheres large (20-30 µm) usually containing 2-4 cells. Liths circular, 3-7 µm; central opening broad; proximal shield monocyclic, flat, wider than distal shield.

Remarks:

Range: ca NN15 to Recent

Synonyms:

• Umbilicosphaera sibogae var. sibogae (Weber-van Bosse, 1901) Gaarder, 1970
• U. mirabilis Lohmann 1902. NB The type specimen of U. mirabilis is a typical U. sibogae but many authors applied the name to U. foliosa.