Rhebilles

Rhebilles is a genus of extinct marine reptiles belonging to the order Plesiosauria. These creatures lived during the Late Cretaceous period, approximately 70 to 66 million years ago. Rhebilles are characterized by their long necks and small heads, typical of plesiosaurs, though specific distinguishing features are often based on limited fossil evidence. Their bodies were broad and flattened, supported by four paddle-like limbs adapted for aquatic locomotion.

The fossil record of Rhebilles is primarily found in deposits from what is now North America, particularly in the Western Interior Seaway. Remains are often fragmentary, making a complete understanding of their anatomy and lifestyle challenging. Paleontologists have identified several species within the Rhebilles genus, each with subtle variations in size and skeletal structure.

As marine predators, Rhebilles likely fed on fish, squid, and other smaller marine organisms. Their long necks would have allowed them to strike at prey from a distance. The exact ecological niche and specific behaviors of Rhebilles are still subjects of ongoing research, with new fossil discoveries potentially shedding more light on these ancient marine reptiles. Their extinction, like that of the non-avian dinosaurs, is attributed to the Cretaceous-Paleogene extinction event.