Fossil fern (Sphenopteris laurenti). This specimen dates from the Middle Coal Measures of the Carboniferous period. It was found in Clay Cross,Derbyshire,UK. The frond measure 9 centimetres long | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 2672 px × 3271 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |