The exine ultrastructure of Pretricolpipollenites bharadwajii from the Permian of Jordan

Tekleva, Maria V.; Stephenson, Michael H.; Zavialova, Natalia E.. 2019 The exine ultrastructure of Pretricolpipollenites bharadwajii from the Permian of Jordan. Review of Palaeobotany and Palynology, 268. 19-28. https://doi.org/10.1016/j.revpalbo.2019.05.003

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Official URL: http://dx.doi.org/10.1016/j.revpalbo.2019.05.003

Abstract/Summary

Dispersed trisulcate pollen grains of Pretricolpipollenites bharadwajii from the ?latest Permian of Jordan were studied with light, scanning, and transmission electron microscopy. The three sulci are located on the disal side. The median sulcus is usually longer, wider than the other two sulci, and has rounded aperture ends. The exine sculpturing and aperture membrane are scabrate. The ectexine includes a thick tectum, granular infratectum, and thin foot layer. The endexine is lamellate. A comparison with the closest similar genus Eucommiidites suggests overlapping characters; though the position of the three sulci on the distal side in Pretricolpipollenites bharadwajii and sulci on different sides in Eucommiidites indicates a possible distinguishing feature. Studies of exine ultrastructure of the other two Pretricolpipollenites species are needed to support or discard the distinction of Pretricolpipollenites and Eucommiidites.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.1016/j.revpalbo.2019.05.003
ISSN:	00346667
Date made live:	06 Sep 2019 14:57 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/525014

Item Type:

Publication - Article

Digital Object Identifier (DOI):

https://doi.org/10.1016/j.revpalbo.2019.05.003

ISSN:

00346667

Date made live:

06 Sep 2019 14:57 +0 (UTC)

URI:

https://nora.nerc.ac.uk/id/eprint/525014