Crinoid calyx preserved in Wenlock Limestone,this limestone was deposited in tropical coral reef conditions during the Silurian Period 443.8–419.2 million years ago. There are 2 different species of crinoid shown here Sagenocrinus expansus and Gissocrinus goniodactylus | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Stammers, Sinclair |
Bildgröße: | 3420 px × 5125 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |