(Lohmann 1912) Janin 1987 [Deutschlandia]
After Young et al. 2003. XCs - circular with very broad rim, elements large with kinked sutures. Central structure is small cone often with slits in base. Complete exotheca are often developed, with coccoliths showing imbricated arrangement.
BCs - long elliptical; central area vaulted, laths bipartite with step-like join forming a ring between plaque and rim; axial structure is broad plaque.
CFCs - with prominent spine ca. 1 μm high, often hidden by XCs.
Coccospheres 10-15 μm; BCs 2-2.5 μm; XCs 3-5.5 μm.
Tropical - transitional (Findlay & Giraudeau, 2000).
60°03.1911' S, 150°47.9310' E, L. Harding, AAD, unpub.
Between 57°12' S, 155°23'E and 58°49' S, 152°48'E, L. Harding, AAD, unpub.
HOL = Periphyllophora mirabilis, see Cros et al. (2000).