Science ❯ Geology

Fossil Formation

Sedimentary Environments Crato Formation Jan Juc Formation Clay Impressions Oligocene Epoch Triassic Period Fossil Preparation Hell Creek Formation

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.

Wyoming 'Mummy' Fossils Show Duck-Billed Dinosaur Had Hooves, Not Preserved Skin