Environment ❯ Ecosystems ❯ Aquatic Ecosystems

Freshwater Ecosystems

Species Interactions Fish Populations Ridley Park Lake Mosasaur Habitat Rivers and Lakes Salmon Migration Adirondack Ecosystems Crocodile Population River Systems

Mosasaurs Lived in Rivers Near the End of the Cretaceous, Isotope Study Finds

Multi‑proxy isotopes from three North Dakota teeth point to riverine life enabled by a freshening Western Interior Seaway.