Micrantholithus brevis


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

Distinguishing features: Micrantholithus with crenulated outline due to two shallow indentations in each segment.


Taxonomy:

Citation: Micrantholithus brevis Jakubowski, 1986
Rank: Species

Farinacci & Howe catalog pages: M. brevis *

Distinguishing features: Micrantholithus with crenulated outline due to two shallow indentations in each segment.


Morphology remarks: Boreal distribution.

Search data:
Tagsnannolith-radiate, pentagonal, star-shaped, CA: closed,
CSPH: equant, monomorphic, T-UNITS: T-prominent,
MetricsLith size: 8->12µm; Segments: 5->5;
Data source notes: holotype +/- 2µm
Sources: holotype +/- 2µm
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: Originally described from the Early Valanginian (Jakubowski 1986). A broader occurence has been observed in the Danish Sector of the North Sea, from Upper Barremian down to the Lower Hauterivian (E. Sheldon pers. comm. 2015).
Last occurrence (top): within Late Barremian Substage (126.30-129.41Ma, top in Barremian stage). Data source: E. Sheldon pers. comm.
First occurrence (base): within Early Valanginian Substage (136.41-139.39Ma, base in Valanginian stage). Data source: Jakubowski, 1986 (original description)

Plot of occurrence data:

References:

Jakubowski, M. (1986). New calcareous nannofossil taxa from the Lower Cretaceous of the North Sea. INA Newsletter. 8: 38-42. gs V O

Jeremiah, J. (2001). A Lower Cretaceous nannofossil zonation for the North Sea Basin. Journal of Micropalaeontology. 20(1): 45-80. gs V O


nannotaxlogo400px

Micrantholithus brevis compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 24-9-2020

Taxon Search:
Advanced Search

Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=10656 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics