Clavatipollenites sp. 2
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https://doi.org/ 10.2478/if-2019-0013 |
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https://treatment.plazi.org/id/0396DC10-BF2B-C227-CC1F-B17EE26A1E10 |
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Diego |
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Clavatipollenites sp. 2 |
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Text-fig. 23a–c View Text-fig
D e s c r i p t i o n a n d r e m a r k s. The material comprises a single clump of many pollen grains (not shown) that are all of the same kind. Pollen grains are monocolpate, almost circular in equatorial outline, about 16 µm in diameter, and semitectate-reticulate with a homobrochate reticulum ( Text-fig. 23a–c View Text-fig ). Lumina are irregular and up to about 1.5 µm in diameter. Muri are ornamented with tiny verrucae arranged along the margins of the muri. Columellae are long and widely spaced ( Text-fig. 23c View Text-fig ). The aperture is narrow elongate without a distinct margin ( Text-fig. 23a View Text-fig ), but in most grains only the proximal surface is exposed ( Text-fig. 23b View Text-fig ).
A f f i n i t y a n d o t h e r o c c u r r e n c e s. In their general shape, the nature of the pollen wall and aperture configuration, the pollen grains are similar to various dispersed pollen grains that are generally assigned to the genus Clavatipollenites and that are thought to be of probable chloranthoid affinity (see above).
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