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A new species of bus-sized fossil reptile has been discovered by a team of scientists in Russia. Pliosaurs are characterised by a large, 2-metre long skull, enormous teeth and extremely powerful jaws, making them the top predators of oceans during the 'Age of Dinosaurs'. The new species belong to a group of Plesiosaur marine reptiles, the most diverse and one of longest-lived aquatic four-limbed creatures, which possess an unusual body shape not seen in other marine vertebrates with four large flippers, a stiff trunk, and a highly varying neck length.