Bussonius


Classification: Mesozoic -> Watznaueriales -> Watznaueriaceae -> Bussonius
Sister taxa: Bussonius, Cyclagelosphaera, Diazomatolithus, Lotharingius, Watznaueria, Ansulasphaera, Bibreviconus, Perchnielsenella,

Distinguishing features: Elliptical watznaueriacean coccoliths with broad V-unit cycle, which results in a three tiered placolith structure. Moderately birefringent in XPL.


Daughter taxa: (blue => in age window 0-800Ma)

Large Bussonius with broad shields, low distal-most shield and central area spanned by a solid-spine-bearing axial cross.
Bussonius with narrow shields and central area spanned by a solid-spine-bearing axial cross and lateral bars.
Specimens not identified to species level

Taxonomy:

Citation: Bussonius Goy in Goy et al., 1979
Rank: Genus
Type species: Bussonius prinsii (Noël, 1973) Goy, in Goy et al., 1979.

Farinacci & Howe catalog pages: Bussonius *

Distinguishing features: Elliptical watznaueriacean coccoliths with broad V-unit cycle, which results in a three tiered placolith structure. Moderately birefringent in XPL.

Geological Range:
Last occurrence (top): in upper part of Aalenian Stage (74% up, 171.3Ma, in Aalenian stage). Data source: Total of range of species in this database
First occurrence (base): at base of Pliensbachian Stage (0% up, 190.8Ma, in Pliensbachian stage). Data source: Total of range of species in this database

Plot of occurrence data:

References:

Bown, P. R. & Cooper, M. K. E. (1998). Jurassic. In, Bown, P. R. (ed.) Calcareous Nannofossil Biostratigraphy. British Micropalaeontological Society Publication Series. 34-85. gs

Goy, G., Noël, D. & Busson, G. (1979). Les conditions de sédimentation des schistes-carton (Toarcien inf.) du bassin de Paris déduites de l'étude des nannofossiles calcaires et des diagraphies. Documents de Géologie de la Faculté des Sciences de Lyon. 75: 33-57. gs


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Bussonius 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=10145 Go to Archive.is to create a permanent copy of this page - citation notes



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