Fossil frog humerus. Coloured scanning electron micrograph (SEM) of the fossilised humerus of a frog from the oligocene era.The familiar frogs, toads, and salamanders have been present since at least the Jurassic Period. Magnification: x10 at 10cm wide | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Gschmeissner, Steve |
Bildgröße: | 3693 px × 4733 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |