Daday, 1887 emend. Kofoid and Campbell, 1929, emend. Balech, 1975
Diagnosis
Lorica cylindrical, globose or cone-shaped. Aboral end expanded, acutiform, or rounded. Laminae with symmetric or asymmetric suboral dilation or thickening (see genus Parundella).
Arranged in Subgroup 4D (see the page Ti. 15 Classification scheme based on morphologically similar groups of species).
Species treated (marked with * is a dubious species):
Undella claparedei-group
*Undella grandis (Laackmann, 1910)
Undella hemisphaerica Laackmann, 1910
Undella hyalina Daday, 1887