Microrhabdulaceae


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

Distinguishing features: Rod-shaped nannoliths.


Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa
Bladed, rod-shaped nannoliths that typically taper towards both ends and with a cruciform cross-section and variably developed lateral projections; the rod is formed from long crystal units which appear to run the length of the lith.

Rod-shaped nannoliths with (sub)circular cross-section and complex construction from systematically arranged laths, commonly creating a "chequered" LM image.

Rod-shaped nannolith with massive, cubiform mid section.

Rod-shaped nannolith composed of four blocks, with central constriction.

Taxonomy:

Citation: Microrhabdulaceae Deflandre, 1963
Rank: Family

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

Distinguishing features: Rod-shaped nannoliths.

Geological Range:
Last occurrence (top): at top of Maastrichtian Stage (100% up, 66Ma, in Maastrichtian 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

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


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Microrhabdulaceae compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 25-8-2019

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Short stable page link: http://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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