Braarudosphaera turbinea

Stradner, 1963 Jan 20, 2026

Set number: 2820

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10µm

Braarudosphaera turbinea, Late Aptian, Arabian Peninsula (The specific location cannot be disclosed)

Set number: 2819

1
2
3
4
5
6

10µm

Braarudosphaera turbinea, Late Aptian, Arabian Peninsula (The specific location cannot be disclosed)

Final Epithet

Braarudosphaera turbinea Stradner, 1963

Basionym

Braarudosphaera turbinea Stradner, 1963

Description

Rounded species of Braarudosphaera have segments that overlap each other in a clockwise direction. The sutures between the segments are inclined counterclockwise.

Optical Properties

In the plan view, this species shows length-slow (+) elongation.

Remarks

Braarudosphaera turbinea differs from Braarudosphaera psevditurbinea in the clockwise imbrication of its segments, whereas in the latter, the segments imbricate counterclockwise.

References

Stradner, H. 1963. New contributions to Mesozoic stratigraphy by means of nannofossils. Proceedings of the Sixth World Petroleum Congress. Section 1 Paper 4: 167-183.

Taxonomy

Braarudosphaera

Biostratigraphy

Stratigraphic Range

Late Aptian - Danian

Age (Ma)

118.76? - 61.66?

Holotype

Braarudosphaera turbinea Stradner, 1963

Danian

Haidhof W Ernstbrunn, Austria.