| Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011 |
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| Sigma radiata M. Peragallo 1920, p. 100; pl. 2, fig. 20 | |||
| Published in | Peragallo, M. 1920 [ref. 002802]. Diatomées du Pont-du-Gail près de Saint-Clément (Cantal). Bulletin de la Société Géologique de France 20:88-96. | ||
| Type | Click here to view INA card. Click here to check this name in the INA website. | ||
| Type Locality | Language of description | F | |
| Collector | Assessment of record accuracy | uncertain/not verified | |