Micula vekshinae

Set number: 2129

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10µm

Aguablanca Creek, Colombia

Holotype, in the mobile mount.

Set number: 2127

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10µm

Aguablanca Creek, Colombia

In the mobile mount.

Set number: 2128

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10µm

Aguablanca Creek, Colombia

In the mobile mount.

Set number: 2126

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10µm

Aguablanca Creek, Colombia

Set number: 2125

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10µm

Aguablanca Creek, Colombia

Set number: 2130

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10µm

Aguablanca Creek, Colombia

In the mobile mount

Set number: 2120

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10µm

Aguablanca Creek, Colombia

Set number: 2119

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10µm

Montebello, Colombia

Set number: 2111

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10µm

Aguablanca Creek, Colombia

Set number: 2109

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10µm

Aguablanca Creek, Colombia

Set number: 2108

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10µm

Aguablanca Creek, Colombia

Set number: 2106

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10µm

Aguablanca Creek, Colombia

Set number: 2088

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10µm

Mauritania, West Africa

Final Epithet

Micula vekshinae Varol, 2025a

Basionym

Micula vekshinae Varol, 2025a

Diagnosis

Micula vekshinae, a cuboid species, exhibits blocks resembling a cobbler’s anvil, with a prominent cross extending nearly the entire length of the blocks.

The blocks display parallel extinction with length-fast (-) elongation, while the cross also shows parallel extinction but with length-slow (+) elongation.

Etymology

In honour of Dr V. N. Vekshina, Russia, in recognition of his contributions to the taxonomy of calcareous nannofossils.

Dimensions Of Holotype

Length of sides = 4.15 μm; Diagonal length = 4.92 μm.

Remarks

Micula vekshinae differs from Micula decussata in that its prominent cross exhibits length-slow (+) elongation. In contrast, the cross of Micula decussata is confined to the central area and displays length-fast (-) elongation.

References

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

Taxonomy

Micula

Biostratigraphy

Stratigraphic Range

Early Santonian - Early Maastrichtian

Age (Ma)

85.70? - 69.91?

Holotype

Micula vekshinae Varol, 2025b

Middle Santonian / Late Santonian

Aguablanca Creek, Colombia