| When bivalves diversified in the Middle to Upper Ordovician, both classes occupied a full range of environments, from nearshore to basinal. |
| Early Namurian basinal mudstones are the source rocks for these hydrocarbons. |
| The Maghrebian belt, forming the main part of Sicily, consists of Permian to Oligocene shelf and basinal carbonate successions, followed by younger terrigenous deposits. |
| The Nun Mine Member consists of thin-bedded calcareous mudstones locally with abundant radiolaria, and represents offshore, basinal environments. |
| Over the past year and a half, Tri Link has entered a significant new full-cycle basinal play on the Red River. |
| The Pico Anticline is part of the Ventura Basin, a large synclinal basinal feature, which essentially encompasses all of the drainage area of the Santa Clara River. |
