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. The sample includes a mixture of organic detritus,filaments resembling the modern day filamentous blue green algae,& colonies of algae (spikelets). Not visible,but included among Gunflints are spheroids - related to coccoid blue green algae of today. 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:X160 (35mm size) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Stammers, Sinclair |
Bildgröße: | 5232 px × 3412 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |