Light micrograph of a rock thin section of Gunflint cherts from Ontario,Canada,showing fossil remains of the earliest life forms yet found,dating from two billion years ago. These include a mixture of organic detritus,filaments resembling the modern day filamentous blue green algae,colonies of algae (spikelets) & spheroids associated with current coccoid blue green algae. These primitive plants gained energy through photosynthesis,releasing free oxygen into the environment as a by product. This had far reaching consequences for the subsequent history of the environment. Mag:X72 (35mm size) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Stammers, Sinclair |
Taille de l’image : | 5030 px × 3528 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |