The rock cycle |
Fossils in sedimentary rocks |
Sea lily in Triassic rock.
Valle de Pineta (Huesca), Spain; 26 October 2018. |
Brachiopod in Devonian limestone. Comblain-au-Pont, Belgium; 8 June 2013. |
Various corals in Devonian limestone. Comblain-au-Pont, Belgium; 8 June 2013. |
The mollusc Orthoceras regulare, an early nautiloid cephalopod from the Ordovicium. Djupvik (Öland), Sweden; 17 June 2016. |
Foraminifera from the Eocene. Janovas (Huesca), Spain; 20 October 2018. |
These fossils possibly have echinoderm affiliations. Djupvik (Öland), Sweden; 17 June 2016. |