Nannotax3 - ntax_cenozoic - Markalius Nannotax3 - ntax_cenozoic - Markalius


Classification: ntax_cenozoic -> Mesozoic Survivors -> Markalius
Sister taxa: Biscutaceae, Chiastozygaceae, Markalius, Watznaueriaceae

Daughter taxa (time control age-window is: 0-800Ma)
Markalius apertus
Markalius with open central area.
Markalius inversus
Markalius with closed central area.
Markalius latus
Markalius species with wide, but closed, central area
Markalius walvisensis
Markalius with very narrow tube cycle and closed central area.
Markalius sp.
Specimens which cannot be assigned to any established species


Citation: Markalius Bramlette and Martini, 1964
taxonomic rank: Genus
Type species: Markalius inversus (Deflandre in Deflandre and Fert, 1954) Bramlette and Martini, 1964

Distinguishing features:
Parent taxon (Mesozoic Survivors): Mesozoic taxa which occur in low abundances in the early Palaeogene.
This taxon: Circular placoliths with moderately birefringent shields, bright inner tube cycle and narrow or closed central areas.

Farinacci & Howe catalog pages: Markalius + *

All desribed species are of similar size - coccoliths 5-10 µm across.

Search data:
Lith size: 5->10µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of NP21 zone (100% up, 32.9Ma, in Rupelian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within UC14 zone (80.97-81.43Ma, base in Campanian stage). Data source: Total of ranges of species in this database

Plot of occurrence data:


Bramlette, M. N. & Martini, E. (1964). The great change in calcareous nannoplankton fossils between the Maestrichtian and Danian. Micropaleontology. 10(2): 291-322. gs

Burnett, J. A. (1998). Upper Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series . 132-199. gs O


Markalius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-12-2023

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