Fossilised prehistoric aquatic organism. Fossilised remains (circles) of Cyclomedusa radiata from the Proterozoic era,around 2500-542 million years ago. The Proterozoic era is a period before the first abundant complex life appeared on Earth. Cyclomedusa were was originally thought to resemble jellyfish,but it is now suggested that they were a microbial colony | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Stammers, Sinclair |
Bildgröße: | 5157 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |