Lissos
Lissos is a genus of extinct marine reptiles belonging to the order Plesiosauria. These creatures lived during the Late Cretaceous period, approximately 80 to 75 million years ago. Lissos fossils have been discovered in various locations, primarily in North America. They were characterized by their relatively short necks compared to other plesiosaurs, and their bodies were broad and flattened. Their limbs were adapted into paddle-like flippers, which would have enabled them to propel themselves through the water. The exact diet of Lissos is not definitively known, but based on the teeth and jaw structure, it is believed they were piscivores, feeding on fish and other small marine organisms. The discovery of Lissos has contributed to our understanding of the diversity and evolution of plesiosaurs during the Mesozoic Era. Their classification within the plesiosaurian group helps paleontologists trace evolutionary lineages and understand the ecological roles these marine predators played in ancient oceans. Further research on their skeletal remains continues to reveal more about their anatomy and lifestyle.