- : 199-190
- :
- : Charmouth Mudstone Formation
- : Offshore marine shelf, low-energy, mud-dominated seabed with intermittent limestone beds
- : Ammonites, belemnites, bivalves, fish, ichthyosaurs, plesiosaurs, marine crocodiles, pterosaurs (Dimorphodon), dinosaurs (Scelidosaurus), fossil insects, seed ferns, bennettitaleans, conifers
- : Quiet, open sea with a soft muddy bottom; occasional storm events depositing limestones; rich ammonite faunas marking time; drowned carcasses of reptiles drifting into the basin; nearby coasts with sparse gymnosperm vegetation
