(Lecal-Schlauder 1951) Young, Probert & Kleijne n. comb. [Acanthoica]
After Young et al. 2003. Coccosphere weakly varimorphic (protrusions rather higher toward apical pole). Liths with domal protrusion, ' bowler hat' shaped. Like Algirosphaera robusta but lacks discrete polar coccoliths; liths are less elongate; and protrusion is covered by elongate needle-like elements, rather than tile-like elements. Placed in Cyrtosphaera by Kleijne 1992 on the basis of varimorphism but the coccolith structure is closer to A. robusta than to C. aculeata.
Image taken from a sample from 45°S, 147°E. R. van den Enden, AAD, unpub.