Extinct Era on Instagram: "Elasmosaurids were long-necked marine reptiles that lived mainly during the Late Cretaceous. Some species had over 70 neck vertebrae and used four powerful flippers for propulsion. They likely fed on fish and other marine prey, though exactly how they used their long necks to hunt is still debated. Fossils show they were widespread in marine environments before disappearing in the Cretaceous–Paleogene extinction. In Late Cretaceous Madagascar, Beelzebufo was a massive,