Micrantholithus spinulentus


Classification: Mesozoic -> Braarudosphaerales -> Braarudosphaeraceae -> Micrantholithus -> Micrantholithus spinulentus
Sister taxa: M. brevis, M. hoschulzii, M. lambertii, M. obtusus, M. quasihoschulzii, M. speetonensis, M. spinulentus, M. stellatus, M. sp.,

Distinguishing features: Very large (14–25 µm) with deeply indented sides, and so medium to long free rays (as long as or slightly longer than the central body radius).


Taxonomy:

Citation: Micrantholithus spinulentus Aguado, 2012
Rank: Species

Farinacci & Howe catalog pages: Micrantholithus spinulentus * , ,

Distinguishing features: Very large (14–25 µm) with deeply indented sides, and so medium to long free rays (as long as or slightly longer than the central body radius).

Geological Range:
Notes: From Aguado 2012: This species was found throughout the upper Hauterivian to lowermost Barremian sediments of the Galicia Margin (Applegate & Bergen, 1988) and the Subbetic (our obs.). Its last occurrence is observed in the beds equivalent to the upper pa
Last occurrence (top): within NC5C subzone (130.08-131.51Ma, top in Barremian stage). Data source: Aguado 2012
First occurrence (base): within Late Hauterivian Substage (130.77-133.09Ma, base in Hauterivian stage). Data source: Aguado 2012

Plot of occurrence data:

  • (NB There is no histogram as there are no occurrence records for the taxon in the Neptune database) Parent: Micrantholithus

    References:

    Aguado, R. (2012). Two new Cretaceous calcareous nannofossils from SE Spain and Tunisia. Journal of Nannoplankton Research. 32(2): -. gs

    Applegate, J. L. & Bergen, J. A. (1988). Cretaceous calcareous nannofossil biostratigraphy of sediments recovered from the Galicia Margin, ODP Leg 103. Proceedings of the Ocean Drilling Program. Scientific Results. 103: 293-348. gs


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    Micrantholithus spinulentus compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 17-7-2019

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