Arkhangelskiella specillata
Set number: 249
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10µm
large specimen with a narrow pelaga
Set number: 247
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10µm
large specimen with narrow pelaga
Set number: 242
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10µm
very large specimen with a medium-wide pelaga
Set number: 248
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10µm
very large specimen with a narrow pelaga
Set number: 243
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10µm
very large specimen with a narrow pelaga
Set number: 244
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10µm
very large specimen with a narrow pelaga
Set number: 246
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10µm
very large specimen with a medium-wide pelaga
Set number: 245
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10µm
very large specimen with a medium-wide pelaga
Arkhangelskiella specillata Vekshina, 1959 [Length: 9.5µm; width of pelaga: <1.5µm]
Arkhangelskiella specillata ethmopora Bukry, 1969 [Length: 8.6µm; width of pelaga: <1.5µm]
Species of Arkhangelskiella having a central area with more than eight pores in each quadrant. The current definition of this form is consistent with the holotype measurement. Variants of this species based on overall size and the width of the pelaga may prove to be useful for local correlations. The holotype is 9.5µm; with a narrow pelaga.
Bukry, D., (1969). Upper Cretaceous coccoliths from Texas and Europe. The University of Kansas Paleontological Contributions, Article 51 (Protista 2): 1-79.
Vekshina, V.N., (1959). Coccolithophoridae of the Maastrichtian deposits of the West Siberian lowlands. Siberian Science Research Institute of Geology Geophysics Mineralogy and Raw Materials, 2: 56-81.
Holotype
Arkhangelskiella specillata
Vekshina, 1959
Maastrichtian
Western Siberian Lowland, Luchinkino, Gan'kina series, Russia