A New Reconstruction of Plesiosaurs Based on an Exceptionally Complete Specimen

Plesiosaurs (Plesiosauria) were one of the most iconic groups of marine reptiles during the Mesozoic Era. Their evolutionary history began in the Triassic and continued until the mass extinction at the end of the Cretaceous, spanning roughly 140 million years. Fossils of these animals have been discovered across the globe, indicating that they were widely distributed and highly diverse. Their general body plan is familiar: a long neck, a compact torso, and four powerful flippers adapted for life in the ocean.

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