Reticulofenestra doronicoides
Set number: 1048
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Fig. 1. Silifke, Middle Miocene, Turkey, 4.0 µm
Figs 2-3. Malta, Middle Miocene; Fig. 2. 1.8µm; Fig. 3. 2.6 µm
Fig 4-5. Antalya Basin, Early Pliocene; Fig.4 3.8 µm; Fig. 5. Coccosphere 6.8µm, Coccolith 3.7 µm;
Coccolithus doronicoides Black & Barnes, 1961
Diameter of the central area < width of pelaga
Reticulofenestra minuta Roth, 1970 [Holotype: 1.5µm; Type level: Oligocene]
Reticulofenestra nanna Gheta, 1982 [Holotype: 3-4µm; Type level: Late Eocene]
Cyathosphaera lacrima Hay & Towe, 1962 [Holotype: 2.2µm; Type level: Early Eocene]
Reticulofenestra perforata Martini, 1988 [Holotype: 2.5-3.5µm; Type level: Miocene]
Reticulofenestra moguntina Martini, 1988 [Holotype: 2.3-3.8µm; Type level: Miocene]
A small-sized (<4.0µm) species of Reticulofenestra has a narrower central opening than the width of the pelaga.
Black, M. & Barnes, B. 1961. Coccoliths and discoasters from the floor of the South Atlantic Ocean. Journal of the Royal Microscopical Society 80: 137-147.
Gheta, N., 1982. The Eocene of NW Transylvania. A new biochronostratigraphic zonation based on calcareous nannoplankton. Dari de Seama ale Sedintelor Institutul de Geologie si Geofizica 69, 95-106.
Hay, W. W. & Towe, K. M., 1962a. Electron microscope examination of some coccoliths from Donzacq (France). Eclogae Geologicae Helvetiae 55: 497-517.
Martini, E. 1988. Nannoplankton-Massenvorkommen in den Corbicula-(=Schichten mit Hydrobia inflata) und Hydrobienschichten des Oberrheingrabens, des Mainzer und des Hanauer Beckens (Miozän). Geologisches Jahrbuch. A110: 205-227.
Pujos, A. 1985. Cenozoic nannofossils, central equatorial Pacific, Deep Sea Drilling Project Leg 85. Initial Reports of the Deep Sea Drilling Project. 85: 581-607.
Roth, P. H. 1970. Oligocene calcareous nannoplankton biostratigraphy. Eclogae Geologicae Helvetiae 63: 799-881.
Holotype
Coccolithus doronicoides
Black & Barnes, 1961
Cenozoic
Challenger at station 338, The South Atlantic Ocean