Plate 5 in Taxonomic Revision and Classification of Extant Holococcolithophores Previously Placed in the Genus Anthosphaera Kamptner emend. Kleijne 1991

Plate 5. Syracosphaera rotaconica Archontikis, Young, Cros sp. nov. HOL Scale bars = 1μm 1. Holotype; flattened coccosphere with chiral-conical BCs that usually show a small apical boss on top of the central distal cover. BCs' central structure is made of numerous crystal struts, progressively meeting and forming the distal cover. 2. Detail of figure 1 showing the ultrastructure of BCs. 3. Paratype; coccosphere showing the delicate structure of CFCs (see arrow). 4. Paratype.