Varol Research | Aktasia leckiei

Set number: 2790

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10µm

Aktasia leckiei, Middle Campanian, Arabian Peninsula (The specific location cannot be disclosed)

Set number: 2789

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6

10µm

Aktasia leckiei, Middle Campanian, Arabian Peninsula (The specific location cannot be disclosed)

Set number: 2791

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6

10µm

Aktasia leckiei, Late Turonian, Mauritania, West Africa

Set number: 2788

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10µm

Aktasia leckiei, Late Santonian, Arabian Peninsula (The specific location cannot be disclosed)

Set number: 2787

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2

10µm

Aktasia leckiei, Late Santonian, Arabian Peninsula (The specific location cannot be disclosed)

Set number: 2786

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10µm

Aktasia leckiei, Middle Campanian, Arabian Peninsula (The specific location cannot be disclosed)

Set number: 2785

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10µm

Aktasia leckiei, Middle Santonian / Late Santonian, Arabian Peninsula (The specific location cannot be disclosed)

Final Epithet

Aktasia leckiei Bown, 2005c

Basionym

Aktasia leckiei Bown, 2005c

Dimensions Of Holotype

Length = 3.4 (3.7) µm; Width = 2.4 (2.5) µm.

Remarks

Small species of Aktasia (< 6.0 µm) have a zeugoid outer wall and a protolith inner wall composed of eight large sub-quadrilateral segments. The central area contains a delicate, symmetrical diagonal cross whose arms are composed of a single row of segments and lack distal processes.

References

Bown, P. R. 2005c. Early to Mid-Cretaceous Calcareous Nannoplankton from the Northwest Pacific Ocean, Leg 198, Shatsky Rise. Proceedings of the Ocean Drilling Program, Scientific Results 198:1-82.

Taxonomy

Aktasia

Biostratigraphy

Stratigraphic Range

Late Aptian - Middle Campanian

Age (Ma)

118.76? - 76.38?

Holotype

Helicolithus leckiei Bown, 2005c

Late Albian

ODP Leg 198, Hole 1207B, Shatsky Rise, northwest Pacific.