Distinguishing features:
Parent taxon (Bussonius): Elliptical watznaueriacean coccoliths with broad V-unit cycle, which results in a three tiered placolith structure. Moderately birefringent in XPL.
This taxon: Small (4-5µm) Bussonius with narrow shields and wide central area; distal shield closely appressed to proximal, 2-3 radial bars per quadrant.
Taxonomy:
Farinacci & Howe catalog pages: B. fecheri *
Distinguishing features:
Parent taxon (Bussonius): Elliptical watznaueriacean coccoliths with broad V-unit cycle, which results in a three tiered placolith structure. Moderately birefringent in XPL.
This taxon: Small (4-5µm) Bussonius with narrow shields and wide central area; distal shield closely appressed to proximal, 2-3 radial bars per quadrant.
Size:
LITHS: placolith, elliptical, CA: cross-axial, ca_disjunct, grill, process, CROSS-POLARS: rim-bicyclic, V-prominent, R-prominent, |
Lith size: 4->5µm; Data source notes: original description +/-0.5 µm |
Geological Range:
Last occurrence (top): within Pliensbachian Stage (184.20-192.90Ma, top in Pliensbachian stage). Data source: original description
First occurrence (base): within Pliensbachian Stage (184.20-192.90Ma, base in Pliensbachian stage). Data source: original description
Plot of occurrence data:
Kristan-Tollmann, E. (1988). Coccolithen aus den Älteren Allgäuschichten (Alpiner Lias, Sinemur) von Timor, Indonesien. Geologisch-Paläontologische Mitteilungen Innsbruck. 15: 71-83. gs References:
Bussonius fecheri compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 11-9-2024
Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=10146 Go to Archive.is to create a permanent copy of this page - citation notes |
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