Braarudosphaera quinquecostata
Set number: 13
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Braarudosphaera quinquecostata Hill, 1976
Braarudosphaera gartneri Wind & Wise 1977 in Wise & Wind 1977
Braarudosphaera species are characterised by ridges that radiate outward from the centre and converge at the vertices. From a plan view, they show length-slow (+) elongation.
Hill, M. E. 1976. Lower Cretaceous calcareous nannofossils from Texas and Oklahoma. Palaeontographica Abteilung B Palaeophytologie. 156: 103-179.
Wise, S. W. & Wind, F. H. 1977. Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 36 drilling on the Falkland Plateau, south-west Atlantic sector of the Southern Ocean. Initial Reports of the Deep Sea Drilling Project 36: 269-491
Holotype
Braarudosphaera quinquecostata
Hill, 1976
Late Albian
Denton Marl, Grayson County, Texas, USA