Nannotax3 - ntax_mesozoic - Microrhabdulaceae

Microrhabdulaceae


Classification: ntax_mesozoic -> Nannoliths inc sedis -> Microrhabdulaceae
Sister taxa: Goniolithaceae, Eoconusphaeraceae, Lapideacassaceae, Microrhabdulaceae, Nannoliths inc sed - radiate multielement, Nannoliths inc sed - other

Distinguishing features:
Parent taxon (Nannoliths inc sedis): Nannofossils not obviously homologous with heterococcoliths, holococcoliths, or braarudosphaeralids
This taxon: Rod-shaped nannoliths.


Daughter taxa (time control age-window is: 0-800Ma)Granddaughter taxa
Lithraphidites
Bladed, rod-shaped nannoliths typically tapering at both ends and with a cruciform cross-section and variably developed lateral projections; crystallographic c-axis perpendicular to length

Microrhabdulus
Rod-shaped nannoliths with (sub)circular cross-section and complex construction from systematically arranged laths, commonly creating a "chequered" LM image.
M. belgicus
M. decoratus
M. helicoideus
M. undosus
M. sp.

Pseudomicula
Rod-shaped nannolith with massive, cubiform mid section.
P. quadrata
P. sp.

Singanoa
Rod-shaped nannolith composed of four blocks, with central constriction.
S. scapus
S. sp.

Taxonomy:

Citation: Microrhabdulaceae Deflandre, 1963
Rank: Family

Farinacci & Howe catalog pages: Microrhabdulaceae [no catalog entry yet]

Distinguishing features:
Parent taxon (Nannoliths inc sedis): Nannofossils not obviously homologous with heterococcoliths, holococcoliths, or braarudosphaeralids
This taxon: Rod-shaped nannoliths.

Search data:
TagsLITHS:
MetricsLith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Danian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Berriasian Stage (0% up, 145Ma, in Berriasian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R., Rutledge, D. C., Crux, J. A. & Gallagher, L. T. (1998). Early Cretaceous. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 86-131. gs

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

Deflandre, G. (1963). Sur les Microrhabdulidés, famille nouvelle de nannofossiles calcaires. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris. 256: 3484-3487. gs V O


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Microrhabdulaceae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 28-11-2021

Taxon Search:
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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10666 Go to Archive.is to create a permanent copy of this page - citation notes



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