Bowmania svabenickae

(Burnett, 1997) Varol, 2025a Jul 25, 2025

Set number: 2063

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10µm

DSDP Leg 25, Site 249, Mozambique Channel (Davie Ridge), Indian Ocean

Set number: 2064

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10µm

DSDP Leg 25, Site 249, Mozambique Channel (Davie Ridge), Indian Ocean

Set number: 2062

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10µm

Arabian Peninsula (The specific location cannot be disclosed)

Final Epithet

Bowmania svabenickae (Burnett, 1997) Varol, 2025a

Basionym

Quadrum svabenickae Burnett, 1997

Remarks

Cuboid species of Bowmania exhibit a square central depression with apices aligned at 45° to the apices of the blocks. A central cross occupies the central depression and displays parallel extinction with length-fast (-) elongation. The blocks also display parallel extinction, but with length-slow (+) elongation.

References

Burnett, J. A., 1997c. New species and new combinations of Cretaceous nannofossils and a note on the origin of Petrarhabdus (Deflandre) Wise & Wind. Journal of Nannoplankton Research 19(2), 133-146.

Varol, O. 2025a. A practical guide to optical studies of calcareous nannofossils. Grzybowski Foundation Special Publication. 29: 1-222

Taxonomy

Bowmania

Biostratigraphy

Stratigraphic Range

Middle Coniacian - Middle Campanian

Age (Ma)

88.40 - 76.38

Zone(s)

CC13 - CC22

Holotype

Quadrum svabenickae Burnett, 1977

DSDP Leg 25, Site 249, Mozambique Channel (Davie Ridge), Indian Ocean