Fossil diatoms. Coloured scanning electron micrograph (SEM) of fossilised diatoms,single- celled planktonic algae. The diatoms create a shell (frustule) of silica around themselves for protection and support,which is readily fossilised. Rock formed from diatom shells is called diatomite,or diatomaceous earth. It is used industrially as a filter for purifying liquids. Magnification unknown | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gschmeissner, Steve |
Taille de l’image : | 2085 px × 1851 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |