Cocconeis placentula
- kingdom: Chromista
- phylum: Ochrophyta
- class: Bacillariophyceae
- order: Achnanthales
- family: Cocconeidaceae
- genus: Cocconeis
- species: Cocconeis placentula
Lukov
Zlín
Czech Republic
Tübingen
Baden-Württemberg- Albertstadt
Saxony
Germany
Bay Point
California
United States