Pollicenotas constrictus

(Hattner, Wind & Wise, 1980) Varol, n. comb. Aug 06, 2020

Set number: 138

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10µm

Pollicenotas constrictus, Late Campanian, Unknown

Set number: 139

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10µm

Pollicenotas constrictus, Late Campanian, Unknown

Set number: 137

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10µm

Pollicenotas constrictus, Late Campanian, Unknown

Set number: 140

1
2
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10µm

Pollicenotas constrictus, Late Campanian, Unknown

Final Epithet

Pollicenotas constrictus (Hattner, Wind & Wise, 1980) Varol, n. comb.

Basionym

Broinsonia parca constricta Hattner, Wind & Wise, 1980

Synonyms

Aspitolithus parcus constrictus (Hattner, Wind & Wise, 1980) Perch-Nielsen, 1984

Remarks

Species of Pollicenotas having a diamond shape central area with a porous plate surrounded by a wide birefringent tube cycle and a narrow deemer distal shield. The fluted structures are distinct on the tube cycle in LM. The number of pores per quadrant is usually one to two. The width of the central area is less than that of pelaga.

References

Hattner, J.G., Wind, F.H. & Wise, S.W., (1980): The Santonian-Campanian boundary: comparison of nearshore-offshore calcareous nannofossil assemblages. - Cahiers de Micropaleontologie, 3: 9-26.

Perch-Nielsen, K., (1984): Validation of new combinations. - Newsletter of the International NannoplanktonAssociation, 6(1): 42-46.

Taxonomy

Pollicenotas

Biostratigraphy

Stratigraphic Range

Early Campanian - Early Maastrichtian

Age (Ma)

82.29 - 71.94

Holotype

Broinsonia parca constricta Hattner et al., 1980

Middle Campanian

Clubhouse Crossroads Core 1, South Carolini, USA