Nannotax3 - Mesozoic

Markalius

Classification: Mesozoic -> Heterococcoliths inc sedis -> placoliths inc sedis -> Markalius
Sister taxa: Ellipsolithus, Haqius, Markalius, Prolatipatella, Repagulum,

Distinguishing features: Circular placoliths with moderately birefringent shields, a bright inner tube cycle and narrow or closed central areas.

Daughter taxa: (blue => in age window 0-800Ma)
				Markalius inversus Markalius with closed central area.
				Markalius vetulus
				Markalius sp. Specimens not identified to species level

Taxonomy:

Citation: Markalius Bramlette & Martini, 1964

Rank: Genus

Type species: Cyclococcolithus leptoporus inversus Deflandre in Deflandre and Fert, 1954

Farinacci & Howe catalog pages: Markalius + *

Distinguishing features: Circular placoliths with moderately birefringent shields, a bright inner tube cycle and narrow or closed central areas.

Geological Range:
Last occurrence (top): within Chattian Stage (23.03-28.09Ma, top in Chattian stage). Data source: Total of range of species in this database
First occurrence (base): within Valanginian Stage (133.88-139.39Ma, base in Valanginian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: placoliths inc sedis

References:

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

Deflandre, G. & Fert, C. (1954). Observations sur les coccolithophoridés actuels et fossiles en microscopie ordinaire et électronique. Annales de Paléontologie. 40: 115-176. gs

Markalius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-6-2019

Taxon Search:

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10630 Go to Archive.is to create a permanent copy of this page - citation notes

Comments (1)

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fatemeh (Mashhad, Iran)

hi,

There isn't the species "Markalius circumradiatus" here.

11th November 2017 10:32am

Jeremy Young (UK)

Hi, sorry for slow reply. The species is included in Haqius, so you can find it there. More generally you can use "search" to look for species and it in cases like these where the combination has changed it should send you in the right direction.

1st December 2017 11:17am

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