Serpentine-necked, four-flippered plesiosaurs were among the most successful marine predators in the time of dinosaurs.

Even today, bones and scutes are sold as medicine from China to Mexico. Through most of this shared history, turtles haven’t just survived—they’ve thrived. “The sea was all thick with them ...

Similarly, most living things produce records of their own existence in layered body tissues – often in the form of daily or ...

Narwhal tusks , meanwhile, have helped explain how declining Arctic sea ice has affected their ... including the eye lenses of fish and turtle scutes. Others, such as bird feathers, are shorter ...

Sea turtles spend the majority of their immature and adult lives ... as did the subject area of each photograph (left or right facial scutes, carapace or some combination thereof). Citizen scientists ...