Micrantholithus quasihoschulzii


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

Distinguishing features: Micrantholithus with shallow indentations in each segment.


Taxonomy:

Citation: Micrantholithus quasihoschulzii Burnett, 1997
Rank: Species

Farinacci & Howe catalog pages: Micrantholithus quasihoschulzii *

Distinguishing features: Micrantholithus with shallow indentations in each segment.


Morphology remarks: Similar to Micrantholithus hoschulzii, but with younger, disjunct stratigraphic range (Coniacian).

Geological Range:
Notes: Only a few sightings of Micrantholithus have been recorded in the Upper Cretaceous. Gartner (in Robaszynski et al., 1990) found a form of Micrantholithus in the Turonian of Tunisia which has crenulate outer edges, whilst the author has only found rare specimens of the new species in the Coniacian of the Trunch BH (Norfolk,UK) and in the southern English Chalk. [Burnett 1997]
Last occurrence (top): at top of UC10 zone (100% up, 86.5Ma, in Coniacian stage). Data source: Burnett 1998, fig. 6.4
First occurrence (base): in lower part of UC10 zone (20% up, 89.1Ma, in Coniacian stage). Data source: Burnett 1998, fig 6.4

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:

    Burnett, J. A. (1997c). New species and new combinations of Cretaceous nannofossils and a note on the origin of Petrarhabdus (Deflandre) Wise & Wind. Journal of Nannoplankton Research. 19(2): 133-146. gs

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


    nannotaxlogo400px

    Micrantholithus quasihoschulzii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 18-11-2019

    Taxon Search:
    Advanced Search

    Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10661 Go to Archive.is to create a permanent copy of this page - citation notes



    Comments (0)

    No comments yet. Be the first!

    Add Comment

    * Required information
    1000
    Captcha Image
    Powered by Commentics