Discoaster trifolius


Classification: ntax_cenozoic -> Discoasterales -> Discoasteraceae -> Discoaster -> D. pentaradiatus group -> Discoaster prepentaradiatus -> Discoaster trifolius
Sister taxa: D. prepentaradiatus prepentaradiatus, D. prepentaradiatus plautus, D. styzenii, D. trifolius

Taxonomy:

Citation: Discoaster trifolius Browning & Bergen, in Browning et al. 2017
Rank: species
Synonyms:

Distinguishing features: 3-rayed D. prepentaradiatus

Farinacci & Howe catalog pages: D. trifolius *

Search data:
TagsLITHS: nannolith-radiate, star-shaped, triangular, CROSS-POLARS: 1ou, V-prominent,
MetricsLith size: 0->0µm;
The morphological data given here can be used on the advanced search page. See also these notes

Geological Range:
Notes: According to Browning et al. (2017) this form has its FAD significantly higher within NN9 than the 5-rayed forms; likewise its LAD is lower within NN10 than the 5-rayed forms.
Last occurrence (top): in mid part of NN10 zone (50% up, 8.9Ma, in Tortonian stage). Data source: Browning et al 2017
First occurrence (base): in upper part of NN9 zone (80% up, 9.7Ma, in Tortonian stage). Data source: Browning et al 2017

Plot of occurrence data:

References:

Browning, E., Bergen, J. A., Blair, S. A., Boesiger, T. M. & de Kaenel, E. (2017). Late Miocene to Late Pliocene taxonomy and stratigraphy of the genus Discoaster in the circum North Atlantic Basin: Gulf of Mexico and ODP Leg 154. Journal of Nannoplankton Research. 37(2-3): 189-214. gs V O


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Discoaster trifolius compiled by Jeremy R. Young, Paul R. Bown, Jacqueline A. Lees viewed: 27-1-2021

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Short stable page link: http://mikrotax.org/Nannotax3/index.php?id=1587 Go to Archive.is to create a permanent copy of this page - citation notes



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