Ammonite fossils. Ammonites,now extinct,were marine invertebrate molluscs with a spiral shell,most less than 20 centimetres across. These three ammonites are (left to right): Oistoceras wrighti; Asteroceras obtusum (this is the zonal index species); Tragophylloceras loscombi. All three are from Jurassic rocks near Lyme Regis,UK. They are part of the collections held at the Natural History Museum,London,UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 3725 px × 2345 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |