Taxonomy:
Distinguishing features:
Parent taxon (Markalius): Circular placoliths with moderately birefringent shields, bright inner tube cycle and narrow or closed central areas.
This taxon: Specimens which cannot be assigned to any established species
Farinacci & Howe catalog pages:
Search data:
Lith size: 0->0µm; |
Geological Range:
Last occurrence (top): within NP21 zone (32.92-34.44Ma, top in Rupelian stage). Data source: same as genus
First occurrence (base): within Campanian Stage (72.17-83.65Ma, base in Campanian stage). Data source: same as genus
Plot of occurrence data:
Mai, H., Hillebrandt-Habel, T., von Salis Perch-Nielsen, K. & Willems, H. (1998). Paleocene coccospheres from DSDP Leg 39, Site 356, Sao Paulo Plateau, S. Atlantic Ocean. Journal of Nannoplankton Research. 20(1): 21-29. gs Okada, H. & Thierstein, H. R. (1979). Calcareous nannoplankton - Leg 43, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 43: 507-573. gs O Perch-Nielsen, K. (1971c). Elektronenmikroskopische untersuchungen an Coccolithen und verwandten Formen aus dem Eozan von Danemark. Biologiske Skrifter, Kongelige Danske Videnskabernes Selskab. 18(3): 1-76. gs O Perch-Nielsen, K. (1979). Calcareous nannofossil zonation at the Cretaceous/Tertiary boundary in Denmark. In, Birkelund, T. & Bromley, R. G. (eds) Proceedings Cretaceous-Tertiary Boundary Events Symposium, Copenhagen, 1. Copenhagen 115-135. gs O Perch-Nielsen, K. (1981). Nouvelles observations sur les nannofossiles calcaires a la limite Crétacé-Tertiaire près de El Kef (Tunisie). Cahiers de Micropaléontologie. 3: 25-37. gs Wise, S. W. (1983). Mesozoic and Cenozoic calcareous nannofossils recovered by DSDP Leg 71 in the Falkland Plateau region, Southwest Atlantic Ocean. Initial Reports of the Deep Sea Drilling Project. 71: 481-550. gs OReferences:
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Markalius sp. compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 14-2-2025
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=842 Go to Archive.is to create a permanent copy of this page - citation notes |
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