Pterospermella, Eisenack, 1972
publication ID |
https://doi.org/ 10.5252/g2011n1a6 |
DOI |
https://doi.org/10.5281/zenodo.4608595 |
persistent identifier |
https://treatment.plazi.org/id/039A87FC-FFDC-6173-FCC4-FB58FEBEFBC7 |
treatment provided by |
Felipe |
scientific name |
Pterospermella |
status |
|
Pterospermella sp. ( Fig. 13P View FIG )
OCCURRENCE. — Ashikajima Fm (rare).
DISTRIBUTION. — This genus is known from the Precambrian to possibly Holocene.
DESCRIPTION
Flattened lenticular body. The central body is biconvex and darker than the folded equatorial membrane that surrounds it. Length = 38 µm; width = 30 µm; central body (length × width) = 15 × 10 µm; equatorial membrane width = 10 µm.
Ashikajima Fm Kimigahama Fm
1 % 1 % 23 36 % 4 % 7 % 9 % % 1 % 2 % 12 % 12 % Psilate spores Bisaccate pollen grains Araucariaceae Cicatricose spores Monosulcate pollen grains Other gymnosperms Other ornamented spores Classopollis-Corollina Dinoflagellates
BOTANICAL AFFINITIES
Pterospermatales, Pterospermellaceae of marine environment.
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