Varol Research | Grantarhabdus meddii

Set number: 3091

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10µm

Grantarhabdus meddii, Early Hauterivian, Speeton Clay at Speeton, England

Set number: 3092

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10µm

Grantarhabdus meddii, Middle Albian, Folkestone, England

Set number: 3093

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10µm

Grantarhabdus meddii, Late Aptian, Gargas, SE France

Set number: 3094

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10µm

Grantarhabdus meddii, Early Hauterivian, Speeton Clay at Speeton, England

Set number: 3095

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10µm

Grantarhabdus meddii, Early Hauterivian, Speeton Clay at Speeton, England

Final Epithet

Grantarhabdus meddii Black, 1971a

Basionym

Grantarhabdus meddii Black, 1971a

Optical Properties

The optical properties are comparable to those of Granthorhabdus.

Remarks

Medium- to large-sized species of Grantarhabdus are characterised by a symmetrical diagonal cross that forms a narrower angle along the short axis, resulting in smaller pores than those aligned with the long axis; this feature is diagnostic for identifying Grantarhabdus meddii.

References

Black, M. 1971a. Coccoliths of the Speeton Clay and Sutterby Marl. Proceedings of the Yorkshire Geological Society 38: 381-424.

Taxonomy

Grantarhabdus

Biostratigraphy

Stratigraphic Range

Early Berriasian - Middle Albian

Age (Ma)

143.10? - 107.59?

Holotype

Grantarhabdus meddii Black, 1971a

Berriasian

Speeton Clay at Speeton, England