Published March 31, 2011
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Taxonomic treatment
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Gnetaceaepollenites Thiergart 1938
Description
Gnetaceaepollenites sp.
(Fig. 13L)
Gnetaceaepollenites sp. B, Legrand, Palynologie des dépôts Jurassique supérieur et Crétacé inférieur du Japon, et
provinces paléofloristiques du sud-est asiatique: 191, pl. XX, fig. 15 (2009).
OCCURRENCE. — Ashikajima Fm.
DESCRIPTION
Polyplicate pollen grain. Amb ellipsoidal. The exine is constituted of about 15 ribs running through the grain, and describing a senestral “helix” of 180°. The ribs are 1.8-3 µm wide, separated by furrows less than 0.5 µm wide.The ends of the ribs closely gather at each end of the long axis of the grain without joining. Length = 38 µm; width = 27 µm.
BOTANICAL AFFINITIES
Gymnosperms, Gnetales.
Notes
Published as part of Legrand, Julien, Pons, Denise, Nishida, Harufumi & Yamada, Toshihiro, 2011, Barremian palynofloras from the Ashikajima and Kimigahama formations (Choshi Group, Outer Zone of south-west Japan), pp. 87-135 in Geodiversitas 33 (1) on page 115, DOI: 10.5252/g2011n1a6, http://zenodo.org/record/4597011
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Additional details
Identifiers
Biodiversity
- Genus
- Gnetaceaepollenites
- Kingdom
- Plantae
- Order
- Lycopodiales
- Phylum
- Tracheophyta
- Scientific name authorship
- Thiergart
- Taxon rank
- genus
- Taxonomic concept label
- Gnetaceaepollenites Thiergart, 1938 sec. Legrand, Pons, Nishida & Yamada, 2011