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: M. quasihoschulzii *

Distinguishing features: Micrantholithus with shallow indentations in each segment.


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

Search data:
TagsLITHS: nannolith-radiate, pentagonal, CA: closed,
CSPH: equant, monomorphic, CROSS-POLARS: T-prominent,
MetricsLith size: 8->12µm; Segments: 5->5;
Data source notes: illustrated specimens
The morphological data given here can be used on the advanced search page. See also these notes

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:

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 V O

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


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Micrantholithus quasihoschulzii compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-9-2020

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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



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