Distinguishing features:
Parent taxon (Nephrolithus): Reniform; central-area net with two to numerous pores
This taxon: Central area with 2-60 perforations each defined by rather irregular elongate crystals
Taxonomy:
Farinacci & Howe catalog pages: N. corystus *
Distinguishing features:
Parent taxon (Nephrolithus): Reniform; central-area net with two to numerous pores
This taxon: Central area with 2-60 perforations each defined by rather irregular elongate crystals
Search data:
LITHS: placolith, asymmetric, CA: closed, cross-axial, grill, plate, process, ca_disjunct, CROSS-POLARS: R-prominent, V-prominent, rim-bicyclic, |
Lith size: 6->16µm; Data source notes: original description |
Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.17Ma, top in Maastrichtian stage). Data source: Burnett 1998
First occurrence (base): within UC15d subzone (75.85-76.77Ma, base in Campanian stage). Data source: Burnett 1998
Plot of occurrence data:
Bown, P. R. & Young, J. R. (1997). Mesozoic calcareous nannoplankton classification. Journal of Nannoplankton Research. 19(1): 21-36. gs Bralower, T. J. & Siesser, W. G. (1992). Cretaceous calcareous nannofossil biostratigraphy of Sites 761, 762, and 763, Exmouth and Wombat Plateaus, northwest Australia. Proceedings of the Ocean Drilling Program, Scientific Results. 122: 529-556. gs Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O Pospichal, J. J. & Wise, S. W. (1990). Maestrichtian calcareous nannofossil biostratigraphy of Maud Rise ODP leg 113 sites 689 and 690, Weddell Sea. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 465-487. gs Watkins, D. K. (1992). Upper Cretaceous nannofossils from Leg 120, Kergeulen Plateau, Southern Ocean. Proceedings of the Ocean Drilling Program, Scientific Results. 120: 343-370. gs Wind, F. H. & Wise, S. W. (1983). Correlation of upper Campanian-lower Maestrichtian calcareous nannofossil assemblages in drill and piston cores from the Falkland Plateau, southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 551-563. gs Wind, F. H. (1983). The genus Nephrolithus Górka, 1957 (Coccolithophoridae). Journal of Paleontology. 57: 157-161. gs 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): -. gs OReferences:
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Nephrolithus corystus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 15-5-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10797 Go to Archive.is to create a permanent copy of this page - citation notes |
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