👉 Pliosauridae is a family of extinct sauropod dinosaurs that lived during the Late Cretaceous period, around 69.2 million years ago (Mya). They were part of the order Saurischia and were characterized by their small size, long necks, and large, powerful jaws. Pliosauridae are known for a unique adaptation: they have a highly elongated skull with many small teeth, which is called a "plio" or "
