FIGURES 19–24 in Morphology of some fossil lacustrine centric species from the western United States assigned to the genus Cyclotella (Bacillariophyta), including four described as new
| Main Authors: | Kociolek, J. P., Khursevich, G. K. |
|---|---|
| Format: | info Image Journal |
| Terbitan: |
, 2013
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5085534 |
Daftar Isi:
- FIGURES 19–24: Cyclotella kansasica, SEM. Figures 19–21, external views. Flat valve face has striae with 3–4 rows of areolae towards the margin, and scattered areolae in the center, usually with one enlarged depression. Openings of the marginal fultoportulae occur on every rib. Thick spines or bases are visible on the margin of the valve. Scale bars = 1 μm. Figures 22–24, internal views. Marginal fultoportulae occur on every costa. A ring of simple alveolae is present on the mantle. Central fultoportulae are wanting. Central areolae do not reflect an enlarged opening seen externally. Scale bars = 1 μm.
- Published as part of Kociolek, J. P. & Khursevich, G. K., 2013, Morphology of some fossil lacustrine centric species from the western United States assigned to the genus Cyclotella (Bacillariophyta), including four described as new, pp. 81-99 in Phytotaxa 127 (1) on page 86, DOI: 10.11646/phytotaxa.127.1.11, http://zenodo.org/record/5085519