Cyclagelosphaera deflandrei

Coccolithus deflandrei Manivit, 1966

Watznaueria manivitiae Bukry, 1973f

Very large (>12.0 μm) species of Cyclagelosphaera have a closed central area and often display first-order yellow to second-order blue interference colors.

Bukry (1973f) introduced Watznaueria manivitiae as a substitute for Coccolithus deflandrei because Watznaueria deflandrei (ex Actinosphaera ) had already been transferred to Watznaueria . The large and circular forms are commonly and correctly assigned to Cyclagelosphaera deflandrei . In this case, the substitute Watznaueria manivitiae lacks a holotype (or shares the same holotype with Cyclagelosphaera deflandrei ).

Bukry, D. 1973f. Phytoplankton stratigraphy, Central Pacific Ocean, Deep Sea Drilling Project Leg 17. Initial Reports of the Deep Sea Drilling Project. 17: 871-889.

Manivit, H. 1966. Sur quelques coccolithes nouveaux du Néocomien. Compte Rendu Sommaire des Séances de la Société Géologique de France. 7: 267-268.

Noël, D. 1965. Sur les Coccolithes du Jurassique Européen et d'Afrique du Nord. Essai de classification des coccolithes fossiles. Éditions du Centre National de la Recherche Scientifique, Paris. 1-129.

Reinhardt, P. 1971. Synopsis der Gattungen und Arten der mesozoischen Coccolithen und anderer kalkiger Nannofossilien. Teil III. – Freiberger Forschungshefte. C267: 19–41.

Roth, P. H. 1973. Calcareous nannofossils: Leg 17 of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 17: 695-795.

Varol, O. 2025a. A practical guide to optical studies of calcareous nannofossils. Grzybowski Foundation Special Publication. 29: 1-222

Varol, O. & Bowman, A.R. 2019. Taxonomic revision of selected Late Jurassic (Tithonian) calcareous nannofossils and the application of mobile mounting. Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen. 291/1 (2019): 1–23