Nannotax Enabling nannofossil research

Description: Coccoliths convex outwards, relatively heavily calcified, with ridges on the distal surface.

Remarks: This form is substantially more robust than U. irregularis and is much more common in the fossil record.

Range: NN15? to 21

Original description:

Synonyms:

• Ellipsodiscoaster lidzii Boudreaux and Hay, 1969
• Discoaster murrayi Black & Barnes 1961