Daughter taxa (time control age-window is: 0-800Ma) | Granddaughter taxa | ||||
P. columnata group Circular Prediscophaera species | |||||
P. cretacea group Elliptical Prediscophaera species with a diagonal cross | Prediscosphaera cretacea Prediscosphaera desiderograndis Prediscosphaera grandis Prediscosphaera majungae Prediscosphaera microrhabdulina Prediscosphaera serrata | ||||
P. spinosa group Elliptical Prediscophaera species with an axial cross | Prediscosphaera arkhangelskyi Prediscosphaera borealensis Prediscosphaera bukryi Prediscosphaera incohatus Prediscosphaera mgayae Prediscosphaera rhombica Prediscosphaera spinosa Prediscosphaera stoveri | ||||
Prediscosphaera sp. Specimens not identified to species level |
Taxonomy:
Farinacci & Howe catalog pages: Prediscosphaera * , Deflandrius + *
Morphology:
CA: placolith, ca_disjunct, |
Lith size: 0->0µm; Segments: 16->16; Data source notes: size range of included species |
Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within Aptian Stage (113.20-121.40Ma, base in Aptian stage). Data source: Total of ranges of species in this database
Plot of occurrence data:
Arkhangelsky, A. D. (1912). Upper Cretaceous deposits of east European Russia. Materialien zur Geologie Russlands. 25: 1-631. gs Bown, P. R. & Young, J. R. (1997). Mesozoic calcareous nannoplankton classification. Journal of Nannoplankton Research. 19(1): 21-36. gs Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Lower Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 86-131. gs O Bramlette, M. N. & Martini, E. (1964). The great change in calcareous nannoplankton fossils between the Maestrichtian and Danian. Micropaleontology. 10(2): 291-322. gs Gartner, S. (1968). Coccoliths and related calcareous nannofossils from Upper Cretaceous deposits of Texas and Arkansas. University of Kansas Paleontological Contributions, Articles. 48 (Protista 1): 1-56. gs O Perch-Nielsen, K. (1979). Calcareous nannofossils from the Cretaceous between the North Sea and the Mediterranean. In, Weidmann, J. (ed.) Aspekte der Kreide Europas. International Union of Geological Sciences Series A . 6: 223-272. gs O Perch-Nielsen, K. (1985). Mesozoic calcareous nannofossils. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge (1): 329-426. gs Vekshina, V. N. (1959). Coccolithophoridae of the Maastrichtian deposits of the West Siberian lowlands. Trudyi Instituta Geologii i Geogiziki, Sibiriskoe Otlodelenie, Akademiya Nauk SSSR (Nauka) Moscow. 2: 56-81. gsReferences:
Prediscosphaera compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 10-12-2024
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