Within this famous site, we can observe:
- Regionally unique Lochkovian volcanites,
- Pragian trilobite-rich crinoidal limestones.
- Lower Emsian (Zlíchovian) steep, cone-shaped mudmounds with coral-stabilized flanks.
- Hydrothermal hot vent communities and trilobite lumachelles filling neptunian dykes.
- Rapid upper Emsian burial and overlying, fossiliferous hemipelagic, hypoxic marls.
- Eifelian to Givetian goniatite limestones.
- Hypoxic lower Frasnian styliolinites and Upper Frasnian Kellwasser Facies with cephalopod mass occurrences.
- Lower Famennian radiation interval with rich cheiloceratid fauna.
- The Eifelian/Givetian HOLLARD Mound and its methane seep environments
More details on :
https://www.researchgate.net/publication/324248737_The_world-famous_Devonian_mudmounds_at_Hamar_Laghdad_and_overlying_cephalopod-rich_strata