Markalius


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

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


Daughter taxa (blue => in age window 0-300Ma)
Markalius with closed central area.

Specimens not identified to species level

Taxonomy:

Citation: Markalius Bramlette & Martini, 1964
Rank: Genus
Type species: Markalius inversus (Deflandre in Deflandre and Fert, 1954) Bramlette and Martini, 1964 [Cyclococcolithus]

Farinacci & Howe catalog pages: Markalius + *

Short diagnosis: 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:

References:

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

Burnett, J.A., (1998). Upper Cretaceous. In: Bown, P.R. (Editor), Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publications Series. Chapman & Hall, London, pp. 132-199.

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


nannotaxlogo400px

Markalius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-11-2017

Taxon Search:
Advanced Search

Go to Archive.is to create a permanent copy of this page - citation notes



Comments (1)

Sort By
Page 1 of 1
 
Gravatar
fatemeh (Mashhad, Iran)

hi,

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

Page 1 of 1
 

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics