Aktasia leckiei

Set number: 2790

1
2
3
4

10µm

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

Set number: 2789

1
2
3
4
5
6

10µm

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

Set number: 2791

1
2
3
4
5
6

10µm

Aktasia leckiei, Late Turonian, Mauritania, West Africa

Set number: 2788

1
2

10µm

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

Set number: 2787

1
2

10µm

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

Set number: 2786

1
2

10µm

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

Set number: 2785

1
2

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, nearly fusiform species of Aktasia (<6.0 µm) characterised by a zeugoid outer wall and a protolith inner wall composed of eight large, sub-quadrilateral segments. The central area bears a delicate, symmetrical diagonal cross without a distal process, the arms of which are constructed from a single row of segments.

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.