Impressive 9 cm (3.5 inch) rooted plesiosaur tooth, a genuine marine reptile fossil dating to the Mesozoic Era (approximately 66–200 million years ago), featuring a well-preserved crown and substantial root with natural enamel texture and classic conical form typical of plesiosaurs—long-necked ocean predators famously known from sites such as the Jurassic Coast—making this authentic specimen an excellent display piece for collectors, educators, or fossil enthusiasts seeking a striking and substantial example.